Specifications:The size is 47cm * 30cm * 16cm. One separate laptop compartment hold 16 Inch Laptop.The front pocket can easily store your daily items, keeping your things organized and easy to find. High-quality accessories:The surface of this backpack is made of waterproof nylon material, waterproof and easy to care. When it gets dirty, it can be wiped off with a wet wipe.This backpacks use the world-famous YKK zipper, and the zipper surround is Repeat reinforcement, strong and durable. USB Plug:The USB port allows you charge your phone at anytime and anywhere without take the powerbank out.(Notice: With built in USB charger outside and built in charging cable insidebut powerbank is not included).