Coolife Underseat Carry-On Luggage, 14" Personal Item: 18.4 x 13.4 x 8.4 in
14" underseat / personal item, softside, 4 spinner wheels, 5.2 lb empty. Exterior figures are the maker's own.

Under the seat at 0 of 13 airlines with a published limit
The table below shows the verdict at every airline, best fit first, using the same math as the live fit checker.
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Does the Coolife Underseat Carry-On Luggage fit? All 19 airlines
18.4 x 13.4 x 8.4 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 |
|---|---|---|---|
| Sun Country Airlines | 24 x 16 x 11 | Cabin approved2.6 in to spare | No |
| Allegiant Air | 22 x 16 x 10 | Cabin approved1.6 in to spare | No |
| British Airways | 22 x 18 x 10 | Cabin approved1.6 in to spare | No |
| Frontier Airlines | 24 x 16 x 10 | Cabin approved1.6 in to spare | No |
| Southwest Airlines | 24 x 16 x 10 | Cabin approved1.6 in to spare | not published |
| Qatar Airways | 19.69 x 14.57 x 9.84 | Cabin approved1.2 in to spare | not published |
| Lufthansa | 21.65 x 15.75 x 9.06 | Tight squeeze0.7 in to spare | No |
| Turkish Airlines | 21.65 x 15.75 x 9.06 | Tight squeeze0.7 in to spare | No |
| Air Canada | 21.5 x 15.5 x 9 | Tight squeeze0.6 in to spare | No |
| Alaska Airlines | 22 x 14 x 9 | Tight squeeze0.6 in to spare | not published |
| American Airlines | 22 x 14 x 9 | Tight squeeze0.6 in to spare | No |
| Avelo Airlines | 22 x 14 x 9 | Tight squeeze0.6 in to spare | No |
| Delta Air Lines | 22 x 14 x 9 | Tight squeeze0.6 in to spare | not published |
| Hawaiian Airlines | 22 x 14 x 9 | Tight squeeze0.6 in to spare | not published |
| JetBlue Airways | 22 x 14 x 9 | Tight squeeze0.6 in to spare | No |
| United Airlines | 22 x 14 x 9 | Tight squeeze0.6 in to spare | No |
| Air France | 21.7 x 13.8 x 9.9 | Tight squeeze0.4 in to spare | No |
| Emirates | 21.65 x 14.96 x 8.66 | Tight squeeze0.3 in to spare | not published |
| Ryanair | 21.65 x 15.75 x 7.87 | Gate check0.5 in over | No |
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