Product : Magic School Backpack Material: Oxford cloth suitable for students' backpacks. Dimensions: (16 inches) 43CMX29CMX13.5CM, (14 inches) 38CMX27CMX12.5CM Ergonomic design: The adjustable ring-type adjustment buckle is used to freely adjust the length of the shoulder strap, Reduce the weight burden, effectively protect the back and shoulders, and make your life more comfortable. materials: made of polyester fabric, easy to clean and very durable. The zinc alloy zipper has undergone 500 repeated tensile tests to ensure the safety and durability of daily use.-Large capacity: easy to carry notepads, card readers and a pile of other items, pens and pencils. There are separate pockets inside, which are convenient for carrying a laptop. There are two pockets on each side for storing water bottles, umbrellas and other items.-Applicable occasions: suitable for school backpacks, daily use, short trips, etc. A large backpack suitable for school, work, sports, travel, hiking, shopping, camping or other outdoor activities.