Joker design Classic Basic Casual Backpack Travel Backpack Fits Laptop Fits Notebook Sports Backpack Measurements in photos Sturdy and durable material: This classic university backpack is made of waterproof, sturdy and tear resistant 600D oxford cloth with bimetal zipper. Large capacity design: it can hold a large number of items and can accommodate almost all sizes of laptops. Comfortable: Ventilated back design with thick and soft multi piece breathable pads provides maximum back support. Make it easy and comfortable to carry Convenience: The very humanized design makes your hands free. Suitable for travel: The luggage belt can fix the backpack on the luggage/suitcase. The built-in shockproof belt is used to fix the laptop and iPad to prevent them from shaking and collision.