[Size Information] Size: 32*18*45cm / 12.6*7*17.7inch (L*W*H), Capacity: 20L. Holds 15.6 inch laptop, 9.7 inch tablet, A4 size documents. You can easily store your computer, charger, documents, clothes etc. needed for business trips, tablets, cups, lunch boxes, keys etc. needed for school, it is a backpack for use on the go![Practical Space] Main compartment*1, thickened laptop compartment*1, small internal pocket*2, adjustable pockets on both sides*2, front zippered layer*1, back zippered anti-theft layer*1. Choose the storage space according to your items to safely protect your belongings.[USB Charging Port] The backpack has a USB charging port, making charging even easier! Connect a mobile power supply to the cable inside the backpack and a phone charging cable to the external USB port for safe and easy charging, freeing up your hands when biking and walking (Note: the backpack does not include a charging power supply, only a convenient charging channel).[High Quality Durability] The backpack is packed with Oxford cloth on the outside, lightweight, waterproof and wear-resistant, strong and easy to maintain, a good helper for on-the-go storage. The interior is made of polyester, which is hard-wearing and waterproof and protects items effectively. Ideal as a commuter bag, school bag, business bag or gift.