Perfect size: 28 x 40 x 13 cm (W x H x D). Generous, wide open main compartment with padded sleeve for a 15.6 inch laptop and multiple functional pockets allow you to keep all your devices safe and organised in place. Practical and large capacity: Backpack is waterproof for laptop carrying and business trips, also for business, camping, campus, daily work, school, computer accessories, etc. Property security: Easy access hidden pockets for valuables. The anti-theft pocket in the back could be valuable goods, mobile phone, wallet, passport ...