Ciyum Underseat Detachable Wheels Cabin Cases 1633 Travel Smart. Perfectly sized at40 × 25 × 20 cm (15.7 × 9.8 × 7.9 in), it fits under the seat on major airlines includingRyanair, Wizz Air, Allegiant Air, Jet2, Transavia, TUI, JetBlue, Southwest, Avelo, Breeze Airways, Sun Country, Vueling, Alaska Airlines, United Airlines, and more.
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