This Aerolite cabin luggage is specifically designed to meet the maximum size requirements of 40x30x15 for airlines such as British Airways, KLM, and Air France, allowing you to take it for free in the cabin. It is also the maximum free carry-on or personal item size for Finnair, Iberia, Pegasus, Scandinavian SAS, TAP Portugal, and Turkish Airlines. Additionally, it is accepted as carry-on luggage on many other major airlines worldwide, including easyJet, Ryanair, and LOT.