Debika Sand Cell Purple ■ Product Description Can store hand luggage such as indoor shoes, gym clothes, water bottles, and lunch bags. Features a double zipper that is easy to open and close. Reflectors on the front and back of the main body ensure safety during commutes. Made of durable polyester fabric that is resistant to rain. Precautions: Do not use for purposes other than the intended use. May not be usable depending on the type of randoseru (Japanese school backpack). Materials: Main body: Polyester, Belt: Polypropylene, Reflector: Vinyl chloride resin, Zipper: Nylon, Snap: Iron Size: (One side) 50mm x 170mm x 330mm, Attachable randoseru external dimensions: Height 32-35cm, Width 24.5-27.5cm, Depth 19-22cm