Mesh material white/black randoseru (school backpack) sweat-absorbent pad. - Colors: White/Black - Material: Mesh Used for about a month during the hot summer of first grade, and stored in the closet after washing. I think it's in a clean condition with no noticeable stains. I used it on a Tenshi no Hane (Angel Wing) randoseru, but it attaches with Velcro at the top and bottom, so I think it can be used on general types of randoseru. For those who understand that this is a used item and has been stored at home, thank you.