Scientifically Designed Large Capacity: One main pocket can hold 14" and 13" Mac books or laptops. Side open front sub-pocket, which contains 4 mesh pockets + 1 zipper pocket + 1 pen slot. There are also 2 front zipper pockets + 1 flap pocket + 2 side mesh pockets. Comfortable and Breathable Backpack: Adjustable shoulder straps and a comfortable breathable mesh on the back reduce stress on your shoulders. The bottom end of the shoulder strap is reinforced to prevent it from falling off. With high-brightness reflective strips, it warns vehicles at night. HIGH QUALITY MATERIAL: Our backpack made of waterproof and quality Polyester fabric with metal zippers. Lightweight and sturdy, ensure a secure & long-lasting usage every day. Perfect for weekend getaways, shopping, office work, business trips and other outdoor activities. Also, it is the perfect student backpack for women, men, teens, boys and girls. With an unicorn doll pendant, it can be freely disassembled.