BOPAI Water Resistant Nylon Laptop Backpack with USB Charging Port and TSA Lock (Black) PREMIUM MATERIAL: This stylish attractive backpack is made of water-resistant microfiber leather and durable ballistic Nylon material. The metal fittings, sliders, zippers, pullers used are durable and of premium quality. ORGANIZED DESIGN : This backpack comes with two spaced compartments. One compartment includes soft padded sleeve to hold a 15.6 inch laptop. Another compartment can hold essential accessories. Comes with an organizer to hold mobile, power bank, etc. Spacious enough to hold clothings and office accessories. Front zip pocket to store diary etc. STORAGE : Total capacity :16 litres Dimensions: (L) 31 x (W) 11.5 x (H) 46 cm. Weight: 1.21 Kg. Ergonomic design of back and adjustable anti-pressure foam padded shoulder straps reduces stress and also promotes air circulation. USB FEATURE : External USB port with built-in charging cable enables convenient charging by connecting your power bank with your electronic devices. TSA APPROVED LOCK: A built-in TSA lock gives this backpack an added level of security. The lock can be opened by TSA as needed during the screening process, helps deter thefts during travel.