I injured my knee at the end of November 2025 and was encouraged to purchase this at an orthopedic clinic. It was a minor injury, so I only used it twice. There are no noticeable stains, but please understand that this is a used item. Perhaps this is suitable for those who... ...were planning to use it for a short period and didn't want to buy a new one?? Alcare Co., Ltd. Size M (Reference: I am a 166cm tall male)