This is a back pad for a Randoseru (Japanese school backpack) from SEIBAN. The material looks very cool and breathable. I bought this as a spare but have no plans to use it, so I am listing it for sale. It is new and unused, but the outer bag is partially torn, so I have reinforced it with tape. Thank you for your understanding. The shipping method may change between YuYu Mercari便 and RakuRaku Mercari便. Please understand. Lightweight and breathable mesh back pad, perfect for Randoseru. - Brand: SEIBAN - Product Name: Back Pad - Model Number: SPD20-60 - Price: ¥1,980 (tax included) - Color: Light Blue - Material: Mesh Thank you for looking.