Galaxy Cat Backpack Lightweight School Backpack Laptop Bag for Students Polyester Zipper closure Material: Polyester. Approx Dimensions:18.89" x 12.20" x 5.90"; Capacity: 22L (medium capacity), compatible for laptop. Application: travel, hiking, school bag, shopping, placing laptop, ipad etc,great for casual day use and for students going to school & college Very fashion and comes in a variety of designs and colors. With several pockets within the main compartment, which can carry all of your necessities around you.