Backpack materialSchool backpack is made of waterproofs, high density nylon fabric polyester lining. The metal zippers closure are used by the premium quality zippers to ensure durable Size: Girls large backpack 12.2"x5.9"x18.5"(L*W*H), The laptop bag with padded compartment sleeve fit for 13.3,15.6 ,16.1 inch tablet. Safety Comfortable The thoughtful waistbands on both sides of the backpack can provide you with solid support. The wide and thick durable S-shaped shoulder strap padding has a load-reducing effect, and the backpack shoulder strap can be adjusted in size for comfortable carrying. A well woven luggage strap is very convenient for you to secure your laptop bag on the luggage trolley, making your travel more convenient Multi pocket design The laptop backpack has multiple pockets, with one main pocket for storing laptops and books, and side pockets for storing water bottles, etc. Multiple pockets can keep your items organized and easier to find.