Coolife Hardside Spinner Luggage, 20" Carry-On: 21 x 15 x 8.5 in
20" carry-on, hardside, 4 spinner wheels, 6.4 lb empty. Exterior figures are the maker's own, wheels and handles included.
Cabin approved at 8 of 19 airlines
The table below shows the verdict at every airline, best fit first, using the same math as the live fit checker. For why so many carry-ons fail the US standard box, see our 22 x 14 x 9 breakdown.
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Does the Coolife Hardside Spinner Luggage fit? All 19 airlines
21 x 15 x 8.5 in against each airline's published carry-on box, largest side to largest side, sorted best fit first.
| Airline | Cabin max (in) | Verdict | Under seat |
|---|---|---|---|
| Allegiant Air | 22 x 16 x 10 | Cabin approved1 in to spare | No |
| British Airways | 22 x 18 x 10 | Cabin approved1 in to spare | No |
| Frontier Airlines | 24 x 16 x 10 | Cabin approved1 in to spare | No |
| Southwest Airlines | 24 x 16 x 10 | Cabin approved1 in to spare | not published |
| Sun Country Airlines | 24 x 16 x 11 | Cabin approved1 in to spare | No |
| Lufthansa | 21.65 x 15.75 x 9.06 | Tight squeeze0.6 in to spare | No |
| Turkish Airlines | 21.65 x 15.75 x 9.06 | Tight squeeze0.6 in to spare | No |
| Air Canada | 21.5 x 15.5 x 9 | Tight squeeze0.5 in to spare | No |
| Emirates | 21.65 x 14.96 x 8.66 | Gate check0 in over | not published |
| Ryanair | 21.65 x 15.75 x 7.87 | Gate check0.6 in over | No |
| Alaska Airlines | 22 x 14 x 9 | Gate check1 in over | not published |
| American Airlines | 22 x 14 x 9 | Gate check1 in over | No |
| Avelo Airlines | 22 x 14 x 9 | Gate check1 in over | No |
| Delta Air Lines | 22 x 14 x 9 | Gate check1 in over | not published |
| Hawaiian Airlines | 22 x 14 x 9 | Gate check1 in over | not published |
| JetBlue Airways | 22 x 14 x 9 | Gate check1 in over | No |
| United Airlines | 22 x 14 x 9 | Gate check1 in over | No |
| Air France | 21.7 x 13.8 x 9.9 | Gate check1.2 in over | No |
| Qatar Airways | 19.69 x 14.57 x 9.84 | Gate check1.3 in over | not published |
Bag spec source: amazon.com · accessed 2026-07-09. Airline limits come from each carrier's official baggage page; open an airline above for its citations. Policies change, so verify a borderline case before you fly.
Every Coolife Amazon listing checked states a single Item Dimensions L x W x H figure with no separate body only measurement. Across the three hardside pieces (20, 24 and 28 inch) the largest of the three stated numbers runs 1 to 2 inches above the size named in the product title, which points to that figure being the overall exterior including wheels and handle housing rather than the bare shell, though Coolife never says so explicitly. A few listings also enter length, width and height in an order that does not match the case's real upright orientation, so the three numbers are best read as the case's overall footprint rather than a reliable height versus width breakdown.
All 6 Coolife bags
