Universal size for airlines: 40 x 20 x 25 cm/15.7 x 7.8 x 9.8 inches. It is a carry-on bag suitable for most airlines such as British Airways, Jetblue, easyJet, flybe, TUI Airways, Spirit Airline, Lufthansa, etc. It can easily be placed under the seat or on the overhead compartment, giving you a relaxed flight experience. PREMIUM NYLON: This under-seat carry-on bag is made of high-quality 420D nylon, soft to handle and strong load capacity. Super lightweight, waterproof, and durable. It has a long lifespan, making your journey more comfortable and relaxed. FOLDABLE STYLE: This small carry-on bag can be folded into a square size of approximately 18 x 15 cm, easy to put in a box or wardrobe. Comfortable and portable, giving you a simple journey. It can also be carried by hand or shoulder, or you can place it on the luggage to free your body from pressure. DETAILED HARDWARE: Large compartment, mini compartment for quick access to passport, boarding pass, ID card, credit card. Smooth handle, cute and inspiring airplane logo. Reinforced stitching technique, durable zipper, 2 large compartment pockets. Long and detachable shoulder strap 5 6- 113 cm. NO EXTRA BAGGAGE FEES: This carry-on bag can avoid extra baggage fees. Choosing the right bag can save more budget on your trip. Perfect gift for travelers or frequent business travelers. 1 MONTH WARRANTY~ Satisfactory performance after purchase, feel free to contact us if you encounter any difficulties~