KOCOTREE Petty Cabin Super Hero Corps Series Batman Primary Pupils' School Bag Unisex Children 1 to 6 Grade School Backpack (Small) 1. Material: High-level Nylon. 2. Multi bags / pockets, two side pockets can put water bottle and other fig. 3. Adjustable shoulder strap.Fits most children's age 6-12 years. 4. Small Size: 36H*26L*11W cm/14.1H*10.2L*4.3W inches: Suitalbe for 1 to 3 grade. 5. Large Size: 40H*30L*11W cm/15.7H*11.8L*4.3W inches: Suitalbe for 3 to 6 grade.