Waterproof nylon material. Dimensions: 16.5"L x 4.7"W x 12.2"H. Weight: About 1 lb. The white part is more like a soft beige than pure white.USB Charging Port: The built-in USB port design allows you to charge your phone by connecting a power bank without having to open your backpack on the go. (excluding power bank)Waterproof Fabric: Made of waterproof, durable and breathable nylon fabric. Double padded, reinforced and adjustable shoulder straps provide optimum comfort and fit as snugly as your shoulders allow.Large Capacity: Interior Main Pocket: Laptop Lining Holds 15.6" Laptop. External: 2 front zip pockets, 2 side pockets and 1 front pocket with Velcro. Wide opening design, rectangular opening for easy access to bottom items. Not too bulky, but holds everything you need.FUNCTIONAL AND STYLISH: You can use it as a college bag, business travel backpack, laptop backpack wallet, carry-on bag, doctor teacher backpack, diaper/mom bag and luggage for short trips.The actual color of the backpack may be slightly different from the picture due to different screens displayed or reflected.