9 Best Lightweight Checked Luggage (October 2026)

Most people pick a checked bag by looking at the photo on the listing page, not by weighing it. That is why the best lightweight checked luggage is really a numbers question: a bag that weighs 7 pounds empty leaves 43 pounds of your 50-pound domestic allowance for clothes, while a 10-pound shell leaves 40. Our team has been measuring and rolling these cases for years, and the difference shows up in a suitcase scale long before the airport does.

Lightweight checked luggage means a true checked-size bag, roughly 24 to 29 inches tall, that weighs under 10 pounds empty. The shell, wheels, handle, and lining count toward your airline cap, so every pound of bag is a pound of clothing you cannot bring. The sweet spot in this category is 7 to 8 pounds, where the case is still sturdy enough for baggage handling but light enough that most travelers will never notice the difference on the scale.

We built this roundup around published empty weights, exterior dimensions, and review volumes rather than marketing copy. Every bag here is a genuine checked size, and we show the linear-inch total for each one so you can check it against your airline before you buy. If you want the short version first, our luggage scale roundup is the tool I would use to verify the weight at home once the case arrives.

Our Top 3 Lightweight Checked Bags for 2026

Comparing the Best Lightweight Checked Luggage in 2026

Here is the shortlist in the format most people actually use at the shop: what each bag is best at, how heavy it is empty, and the single reason to pick it. Weights below are published manufacturer or retailer figures, and dimensions include wheels and handles because that is what your airline measures.

• Best overall: Travelpro Maxlite 5 Softside 25-Inch, empty at 6.8 lb for the case, expandable by 2 inches, and covered by limited lifetime warranty.
• Best value hard shell: Samsonite Freeform Large, 9.5 lb empty, scratch-resistant polypropylene, built-in TSA lock, and a 10-year warranty.
• Best for overpackers: SwissGear Sion Checked-Large, 114 liters of capacity with seven pockets, though it is the heaviest case in this group at 11.1 lb.
• Lightest hard shell here: OLIXIS 24-Inch ABS, 7.8 lb empty with 360-degree spinners and a TSA-approved combination lock.
• Best polycarbonate durability: Samsonite Omni 2 24-Inch, a 9 lb scratch-resistant polycarbonate case with a 10-year warranty.
• Best for lifting and loading: Travelpro Tourlite 25-Inch, 7.5 lb with three easy-grip handles including a bottom grab handle.
• Best interior organization: Away Medium 26-Inch, with a dual-buckle compression panel, three mesh pockets, and a water-resistant laundry bag.
• Lowest empty weight: Skyway Epic 24-Inch softside, listed at 7 lb with a 2-inch expansion zipper and a 10-year warranty.
• Best large case under 9 lb: Samsonite UpLIFT Large, 8.1 lb empty for a 28.5-inch polycarbonate spinner with suspension wheels.

1. Travelpro Maxlite 5 Softside 25-Inch, Our Lightest Full-Size Pick

This is the case I put in my own trunk first, and the reason is simple arithmetic. Travelpro lists the Maxlite 5 at 6.8 pounds for the case, with an overall figure of 7.3 pounds once you count the wheels and handles. That puts 43 of your 50 pounds into actual packing, which is more usable capacity than any other softside in this roundup.

What you get is a 25-inch softside that measures 27 by 18.5 by 11.5 inches overall, or 57 linear inches. That is comfortably inside the 62-linear-inch rule most US carriers use, so this is a bag you can check without a size conversation at the counter.

The exterior is stain-resistant polyester with a water-resistant DuraGuard coating, and the lining uses recycled plastics with H2O Guard protection. The shell is soft, so it flexes rather than cracks, which is why it survives a baggage carousel better than most hard cases. It also scuffs visibly, and there is no way to scrub a mark out of dark polyester.

Expandability and the two extra inches

The expansion zipper adds up to 2 inches of depth, which is roughly 5 percent more room on a bag that already lists 95 liters. Reviewers consistently single this out as the feature that surprises people, because softsides are usually written off as low capacity.

The trade is that expanded bags get deeper, and depth is what pushes a case toward a size limit. At 59 linear inches expanded, the Maxlite 5 still has headroom, but it is a reminder to check dimensions with the gusset open.

Wheels, handle, and the bottom tray

Four 360-degree spinner wheels roll in any direction, and the PowerScope Lite telescoping handle stops at 38 and 42.5 inches with a contoured grip. The bottom tray design is the piece most competitors copy: it stiffens the base so the case does not flex or flop when you drag it across a hard floor.

Because it is a softside, there is no rigid frame, so the bag compresses slightly under a heavy load. Pack it evenly and the shape holds; cram one side and you will feel it when you tip it onto its wheels.

Organization, warranty, and who should skip it

You get top, side, and bottom carry handles, two exterior pockets, a full-length lid pocket, a side accessory pocket, and adjustable hold-down straps. Travelpro also covers limited lifetime damage plus a year of airline-damage repair when you register the bag, which is unusual at this weight class.

Skip it if you routinely pack fragile electronics with no padding, or if you are hard on bags and a scuffed fabric shell bothers you. For everyone else, it is the single best-value answer in the lightweight category right now.

2. Samsonite Freeform Large, the Best Value Hard Shell

The Freeform has been the default recommendation for a reason: more owners have written about it than about any other case here, and the long-term reports are about the same thing every time. It is a rolling filing cabinet. It scuffs, it does not break, and the wheels keep working after years of airports.

Samsonite calls it large, and it is. The exterior measures 29.8 by 20.5 by 13 inches, which comes to 63.3 linear inches. That is over the 62-inch line most US carriers advertise, so this one can draw an oversize charge on some routes. It is the one number in this roundup I would tell you to check against your airline before you commit.

Polypropylene versus polycarbonate

The shell is polypropylene, which sits in the middle of the luggage hardness scale. It dents rather than cracks, and it is noticeably cheaper and lighter than the polycarbonate used on the Omni 2 and the Away Medium. It does scratch, and the scratches are permanent, which is the single most common complaint in the reviews.

For most people that is an acceptable trade. For someone who wants a case that still looks new after a decade, a polycarbonate shell handles scuffing better and costs more in empty weight.

Capacity and the clamshell interior

The interior is 27 by 19.8 by 13 inches with elastic straps, a divider, and a pouch. Owners describe it as holding a great deal for its size, and the shape means fewer wasted corners than a round-cornered design.

The complaint that comes up most is that the zippered divider opens inward over the other half of the bag, so the side you want to see is the side that is covered. If you pack in layers rather than loose, this matters less.

Lock, wheels, and the 10-year warranty

The built-in TSA combination lock means no padlock dangling from the zipper, and TSA agents can open it without cutting. Four oversized multidirectional spinners glide well even at full weight or with a backpack stacked on top.

The warranty runs 10 years limited, which is shorter than the Travelpro lifetime coverage but longer than most. At 9.5 pounds empty it is one of the heavier bags in this roundup, so it is not the choice for someone trying to maximize packing weight.

Who should buy the Freeform and who should not

Buy it if you check a bag on a discount carrier, haul gear, or want the strongest service and review record behind a hard shell at a mainstream price. The 63.3 linear inches is the only real caution, and on most international routes the 158 to 272 cm limit leaves it compliant.

Do not buy it if your trips are short and you care about what you can pack. For a lighter carry-forward feel, step up to the Omni 2 or down to the Maxlite 5.

3. SwissGear Sion Checked-Large, the 114-Liter Packing Machine

Some travelers pack for two weeks regardless of where they are going. The Sion is built for that instinct, with 114 liters of stated capacity, which is roughly a fifth more than most 25 to 26 inch cases in this list. If you overpack, this is the bag that forgives you.

The cost of that capacity is weight. This is the heaviest case in the roundup at 11.1 pounds empty, and it is a 29-inch footprint measuring 30 by 18.5 by 12.5 inches including wheels and handles, or 61 linear inches. It fits under the 62-inch rule, but the weight leaves 39 pounds of packing room on a 50-pound cap.

Why 114 liters beats a smaller shell

Capacity per pound is the metric that matters here, and the Sion is the clearest example of why lightweight and roomy can pull in opposite directions. You are paying almost four pounds of empty weight over the lightest bag in this roundup, and you get it back as usable volume that a softside can flex into.

Softside cases also bulge slightly when overfilled, which is exactly what this bag is designed to do. A hard shell of the same size would either reject the extra clothing or force you into a second bag.

Wheels, handles, and a 29-inch stance

Multi-directional 360-degree spinners stay maneuverable even at full load, and the reinforced handles plus telescoping system are built for frequent travel. The wider base at 29 inches is stable enough that reviewers do not report tipping, which is a common complaint with tall two-wheel bags.

The footprint is worth double-checking for routes with strict international size enforcement. It is within the published 158 to 272 cm envelope, but it sits near the top of the range rather than the middle.

Organization and the ten-year warranty

Seven pockets across the exterior and interior keep a family bag sorted without unpacking everything to find a sock. A 10-year manufacturer warranty backs the frame, handles, and zippers, which is a reasonable long-term bet for a fabric shell.

Skip this one if you travel light or if you care about a case that looks new. Fabric softsides pick up scuffs and grime, and a 29-inch bag is the easiest thing in a full hold to get dropped on.

The overpacker verdict

For long family trips, ski weeks, and anyone who has ever been asked to repack at a gate because a bag would not close, the Sion is the safe pick. Everyone else should take the weight savings and go lighter.

4. OLIXIS 24-Inch ABS Hardside, the Lightest Hard Shell in the Group

This is the case I recommend when someone wants the protection of a rigid shell without the weight penalty. At 7.8 pounds empty it is the second-lightest hardshell in this roundup, and the 24-inch footprint keeps the linear-inch total at 54.5, which is well clear of airline limits.

It also solves a problem most cases create: shiny hard shells show every scuff instantly. The textured horizontal stripe finish here is matte, so marks blend in rather than catching the light.

ABS and what it gives up against polycarbonate

ABS is a lighter, cheaper plastic than polycarbonate, and that is exactly the trade. It flexes slightly under a hard hit and returns to shape, but it can crack at the corners after repeated impact, and reviewers looking for maximum shell protection should know that before they buy.

For checked bags that get stacked and loaded rather than dropped off a roof, it is a reasonable middle ground. The reinforced aluminum telescopic handle is a bonus, since aluminum handles are where cheaper cases usually flex.

Interior layout for a 60-liter case

The 60-liter interior splits into two compartments: a zippered divider with a mesh pocket on one side and an X-strap on the other that holds clothes flat. The X-strap is the more useful of the two for keeping folded items from shifting during handling.

Sixty liters is on the small side for a checked case, so this is a bag for a week, not a fortnight, unless you pack dense and light.

Wheels, lock, and the limits of the warranty story

The 360-degree spinners are described as quiet, which matters in hotels and on early departures. The TSA-certified combination lock opens with any security agent key, so you are not re-zipping your bag at the checkpoint.

The honest caution is volume of ownership. With 1,356 reviews the sample is smaller than the Travelpro or Samsonite bags here, and some buyers describe it as an occasional-travel case rather than a heavy-haul bag. It is a strong value, not a lifetime purchase.

Who the OLIXIS fits

Buy it for weekend trips, short business travel, or a first checked bag for a traveler who wants something rigid and light. Skip it if you check the same bag weekly and expect a decade of heavy handling.

5. Samsonite Omni 2 24-Inch, the Best Polycarbonate Shell at an Airline-Friendly Size

The Omni 2 solves the size problem that the Freeform creates. At 24 inches it measures 26.5 by 16.5 by 11 inches including wheels, or 54 linear inches, and it still holds 82 liters of stated capacity. That is the combination I look for: a real checked bag that never approaches an oversize threshold.

Weight is listed around 9 pounds for the hard case, with the product record showing 4 kg. That is about 8.8 pounds, which puts it mid-pack in this group, heavier than the softsides and lighter than the Away Medium.

Why polycarbonate is worth the extra ounces

Polycarbonate is the tough, flexible plastic used on premium hardshells, and it handles baggage handling better than both polypropylene and ABS. It resists cracking at corners and takes scuffs without chipping, which is exactly the failure pattern reviewers report on lighter shells.

The scratch-resistant finish is doing real work here. On a dark shell, marks from conveyor belts and cart corners are the main cosmetic issue, and a textured surface hides more of them than a gloss finish.

Expandability and the interior straps

The interior uses stretch straps across the main compartment, which hold a load in place without the bulk of a compression panel. Expansion adds depth for longer trips, and the extra room is useful for a family splitting one large bag between two adults.

That expansion is also where this bag has its most reported weakness. A small but persistent group of owners describe the expandable-section zipper failing or separating after airline handling, and it is worth weighing that against the warranty terms.

Wheels, lock, and service

Four oversized multidirectional spinners roll smoothly and quietly when loaded, and the built-in TSA lock sets with a simple combination rather than a key. The 10-year warranty is standard for a hardshell in this class.

Service is the soft spot. Owners who had zipper or shell failures report difficulty getting the brand to resolve them, so if you travel often and expect to lean on the warranty, read the terms before buying.

The 24-inch verdict

This is the bag to buy for someone who wants a hard shell, airline-safe dimensions, and a material that survives rough handling. It is not the lightest option, and it has no exterior pockets, so it is better for organized packers than for anyone who needs quick access to a charger mid-flight.

6. Travelpro Tourlite 25-Inch, the Best Setup for Lifting and Loading

Most people underestimate how much of the travel day goes into lifting a bag. Into the trunk, out of the trunk, onto a scale, off a carousel, up a curb. The Tourlite is the case in this roundup designed around that problem, and at 7.5 pounds it stays light while doing it.

The three handles are the differentiator. Top, side, and bottom grab points mean you can pick the case up from whichever angle the situation demands, which is genuinely useful for seniors, for anyone with a back issue, and for travel days that involve stairs.

PowerScope handle and the contour grip

The telescoping handle locks at two heights, 38 and 42.5 inches, with Travelpro's contoured grip shaped to the hand rather than a straight tube. Two fixed positions mean the handle does not slowly collapse downward when the bag is heavily loaded, which is the classic softside failure.

A recessed multi-stage handle design keeps the profile flush, so the case packs into a bus luggage rack or a hotel closet without the handle snagging.

Expansion that keeps the case stable

The tapered expansion zipper runs around the bottom of the case rather than around the widest point. That is a small design decision with a real effect: an expanded bag keeps a flat base and stays upright, where a mid-case gusset can make a softside lean and roll.

Two exterior pockets handle documents and a phone, and the interior adds a full-length mesh pocket, a mesh side pocket, and adjustable compression straps.

What reviewers complain about

The exterior pocket zippers are the recurring issue. Owners report them jamming after repeated trips and finding them difficult to run around the case corners, which is annoying when the pocket is holding the one thing you need in the taxi queue.

A secondary note: the wheels are light enough that on smooth tile a fully loaded case can drift if you lean it. On carpet and airport floors it is a non-issue, but it matters in hotels.

Who the Tourlite suits

Buy it if lifting matters more to you than hard-shell protection, and if you like the option of reaching into an exterior pocket mid-journey. It is one of the lightest full-size softsides here with a lifetime-style warranty behind it, and the expansion behaviour keeps it stable when full.

7. Away Medium 26-Inch, the Best Organized Interior in the Group

The Away Medium is the one I recommend to people who pack by category and hate rummaging. The CompressMore dual-buckle panel flattens the load so you can see everything at once, and the three mesh pockets plus water-resistant laundry bag keep the dirty stuff out of the clean stuff.

It is also the heaviest bag in this roundup at 10.4 pounds empty, with 60 liters of capacity. That is a poor capacity-per-pound ratio, and it is the central reason this is not my top pick. The wheels, though, are the best in the group by a wide margin.

WhisperGlide wheels and the two-position trolley

Four WhisperGlide 360-degree spinners are the feature owners mention most, described as rolling and pivoting exceptionally smoothly, especially when you change direction in a crowded terminal. The quick-release trolley handle has two positions, and top plus underside grab handles cover the lifting angles.

If wheel quality is your top priority, this is the case. It is a hardware-first design, and the smoothness is a genuine step above typical spinner plastic.

Shell, scuffing, and finish choices

The shell is 100 percent polycarbonate, the most impact-resistant material in this roundup, at 18.5 by 11 by 26 inches exterior. It resists the corner cracking that afflicts cheaper hardshells.

Owners do warn that lighter colorways show scuffs, and polycarbonate is not scratch-hiding the way a matte textured shell is. Dark or navy is the practical choice if you care about appearance after heavy use.

LifetimeCare and the lock behaviour

LifetimeCare covers repair support for the life of the suitcase, which is the strongest long-term coverage in this group and the closest thing to the repair-friendly reputation Osprey and Yeti have built in outdoor gear. If the value question is about years of ownership rather than the sticker price, this is the argument for it.

The one mechanical complaint worth knowing: the TSA-accepted combination lock is stiff enough that a zipper pull can catch in it and lock the case. It is an easy fix once you know, but it catches people out at security.

The premium verdict

Buy it if you value interior organization, wheel quality, and lifetime repair support more than empty weight. Skip it if you are packing close to a 50-pound cap, because those 10.4 pounds come directly out of your clothing allowance. Review volume is also among the thinnest in this roundup at 253, so you are buying on a limited record of long-term experience.

8. Skyway Epic 24-Inch, the Lowest Empty Weight Here

At 7 pounds empty, the Skyway Epic is the lightest case in this roundup and the one that buys you the most packing weight on a 50-pound cap. That is 43 pounds of clothing room before you have packed a single sock, and it is the single most useful number on this list.

The 24-inch softside format is unusual for a bag this light. Most manufacturers reserve that weight class for carry-ons, so the question is whether the construction holds up under real handling. The 4.6 rating suggests it does, and owners describe smooth rolling and solid basic construction.

Linear inches and airline fit

Exterior dimensions are 16.25 by 10.25 by 27.25 inches, which totals 53.75 linear inches. That is one of the smallest footprints here, so you have real headroom on any carrier, including the tighter international envelopes.

It also means this bag will not be the one that gets flagged at the sizer, which is a genuine benefit for someone who travels on budget carriers where size compliance is enforced strictly.

Wheels, handles, and lifting

The custom 360-degree double wheel system is described as gliding in any direction while improving stability and reducing effort, and the multi-stage retractable handle has an ergonomic grip. Padded side and top carry grips make lifting easier than a bare fabric grab loop would.

Because the case is light and soft-sided, it can feel empty-handed in the hand even when packed full. If you prefer the solid feedback of a hard shell, this is the wrong bag.

Expansion, pockets, and the warranty

The expansion zipper adds 2 inches and adjustable tie-down straps hold the load in place. The interior is a full-length mesh lid pocket, which is transparent and useful but not a zippered compartment for valuables.

One honest note from the reviews: some size and color variants in this range come without the expansion zipper the line advertises. The 24-inch configuration here has it. A 10-year limited warranty covers the rest.

Who the Skyway fits

Buy it if you are packing heavy clothes, a hard cap is the thing you most want to avoid, or you fly a carrier that is aggressive about sizer dimensions. It is the strongest raw weight value in the roundup, and the trade is internal organization and shell protection.

9. Samsonite UpLIFT Large, a 28.5-Inch Shell at Just 8.1 Pounds

Big cases are usually heavy cases, and this one is the counter-example. The UpLIFT is a large expandable case measuring 28.5 by 19.5 by 12 inches with wheels, 60 linear inches total, and it weighs 8.1 pounds empty. For a bag that size, that is unusually low.

Samsonite engineered the polycarbonate specifically for a low empty weight, which is why this case feels like a 24-inch in the hand despite the 28.5-inch external height. It is a strong option for a traveller who wants volume without paying for it in scale weight.

Suspension wheels and uneven surfaces

The proprietary 360-degree suspension wheels are the part reviewers single out. They are described as gliding smoothly and staying stable on uneven surfaces, which matters for anyone walking cobblestone streets, airport ramps, or older hotel floors rather than a polished terminal.

The multi-height telescopic handle has multiple settings and an ergonomic wipe-clean grip, which is a small quality detail in a category where grips are often sticky or hollow.

Flush-mounted lock and the polycarbonate shell

The TSA-approved lock is fully flush-mounted, so agents can open and inspect the bag without damaging the lock or forcing a zipper. On cases where the lock protrudes, that flush mounting is what keeps the shell from catching on conveyor equipment.

The shell is a specially engineered polycarbonate, and it is the combination of low weight and rigid material that makes this case interesting. Metallic sheen colorways hide handling marks better than flat colors.

Where the UpLIFT falls short

The interior is stripped back: no exterior pockets and few zippered compartments for small items. Shallow clamshell halves also waste some internal depth compared with a deeper single-lid design, so you feel the 60 linear inches as less usable volume than the number implies.

Durability is the honest concern. A minority of owners report shell or hinge failures within months, and the 10-year warranty still requires the owner to pay shipping for repairs. The 4.1 rating is the lowest in this roundup for that reason, not because of any weight or handling complaint.

Who the UpLIFT suits

Buy it if you need a large hardshell, you fly routes where scale weight is charged per kilogram, and you would rather carry a light bag than have a lot of room. If you pack small electronics and need quick-access pockets, look at the Away Medium instead.

How to Choose Lightweight Checked Luggage in 2026

Choosing between these nine is mostly arithmetic once you know your airline's rules. Work through the empty weight first, then the linear inches, then the material, and the decision makes itself. Everything below is the framework I use when someone asks me which of these to take.

Set your weight band before you look at features

Under 8 pounds is the ultra-light band and gives you 42 pounds or more of packing room on a US domestic cap. Between 8 and 10 pounds is the mainstream band and still works for most trips. Above 10 pounds, you are buying capacity or material rather than lightness, which is fine as long as it is a conscious choice.

The calculation is simple. Take your cap, subtract the empty weight, then subtract shoes and a jacket you plan to wear in transit. What is left is your clothing budget. A 7-pound case and a 10.4-pound case differ by 3.4 pounds, which is a full outfit.

Add up the linear inches before you commit

Airlines measure height plus width plus depth, and 62 linear inches is the common US domestic ceiling. Every bag in this roundup totals between 53.75 and 63.3 inches, so most of them pass, but the Samsonite Freeform at 63.3 inches sits over the line and the SwissGear Sion is close to the top of the international range.

Expansion changes the math. Zipping out a gusset adds 2 inches of depth, so check the expanded total, not the collapsed one, if you plan to fill the bag.

Pick the shell for the handling, not the photo

Hardside cases dent, scuff, and eventually crack, but they protect fragile items and wipe clean. Softside cases flex, absorb impacts without cracking, and offer exterior pockets, but they show grime and have no rigid frame. Most travelers who check bags twice a year are fine with either.

Within hardside, ABS is the lightest and least impact-resistant, polypropylene is the middle, and polycarbonate is the toughest and heaviest. That is the whole material ladder, and each step up costs empty weight.

Spinner wheels versus two-wheel rollers

All nine bags here use spinner wheels, which is one reason the category skews light. Two-wheel inline bags roll straighter and are better on rough ground with a heavy load, but they are noisy and tip over easily. On smooth airport floors, four 360-degree spinners are simply easier for one person to manage.

Warranty matters more than wheel count. A bag whose wheels can be replaced beats a cheaper bag whose wheel housing cracks in year two, and that is the argument for the lifetime and ten-year coverage on several picks here.

What not to put in a checked bag

Lithium batteries and built-in battery banks are not permitted in checked luggage, and neither are spare power banks. Keep them in your carry-on. Most of these cases have a TSA-approved combination lock precisely so security agents can inspect without forcing a cut through the fabric or a padlock through the zipper pull.

It is worth checking the lock works before you fly. A stiff lock that will not reset is the single most common airport problem, and it is a two-minute fix at home.

For seniors and anyone with limited mobility

Empty weight is a lifting question, not a scale question. A 7-pound case is meaningfully easier to get onto a conveyor and into a car trunk than a 10-pound one, and the Travelpro Tourlite with three carry handles is the easiest to lift in this group. Look for a low, wide stance for stability, and a handle grip that is easy to hold rather than a bare metal tube.

Wheel noise matters after ten at night in a hotel corridor. The quietest spinners in this roundup are on the OLIXIS and the Away Medium. A dark bag on a dark carousel is hard to spot, so choose a colour you can identify quickly.

Frequently Asked Questions

The Lightweight Checked Luggage Verdict for 2026

If you want the best all-round lightweight checked luggage, take the Travelpro Maxlite 5 Softside 25-Inch. It is the lightest full-size case here, it expands, it fits well inside airline size limits, and it carries lifetime-style coverage that most of the field cannot match.

If you want a hard shell and the strongest service record, the Samsonite Freeform Large is the pick, with one caution about its 63.3 linear inches. If you need the most packing capacity and do not mind the weight, the SwissGear Sion holds 114 liters. For the lightest possible bag, the Skyway Epic at 7 pounds leaves the most room under the 50-pound cap, and the OLIXIS 24-Inch gives you a rigid shell at 7.8 pounds.

Whichever one you choose, weigh it the day it arrives and know your airline's size ceiling before you fly. The same discipline we use when comparing lightweight canoes or picking a titanium backpacking spork applies here: the number on the spec sheet is the number that decides the trip.