Backpack TypeMaterial: Nylon/Polyester/Polyester Fiber/PuFunction: Waterproof/Lightweight/Large Capacity/Internal Expandable/Breathable/Automotive ReflectiveClosing Method: ZipperStyle: Cute/Minimalist/Campus Style: Cute/Fashionable/Minimalist/Campus StyleShoulder Strap Style: AdjustableUsage Scenarios: School/Travel/LeisureSuitable Group: Kindergarten, Grade 1-6