Amazon.com: AREYTECO 55L Big Capacity Carry On Backpack 。This extra large backpack offers 55 liters of capacity and is built for travel, college, or business. It features an anti-theft design and water-resistant construction. Condition: Brand new 1. Measurements 22\" x 15\" x 11\" 2. Materials / Fabric Polyester outer, nylon lining 3. Features ?️ Anti-Theft – Secure back pocket protects valuables like cash and keys. ? Laptop Compartment – Padded section fits up to an 18.4 inch device. ?️ Water Resistant – High-quality polyester and nylon lining shield items from rain. ?️ Breathable Back – Air-flow foam cushion keeps you comfortable during long carries. ✈️ TSA 180° Opening – Opens flat for easy airport security passage. fast shipping, smoke-free home, bundle & save QjBETTVUQkZNSA==