This cover protects your futon from dust, yellow sand, and pollen when drying it. It's made of black nylon and measures 180 x 135 cm. You put it over the futon to cover the entire thing while drying. Because it covers the entire futon, it effectively prevents pollen and dust from getting in. Black absorbs heat, which also has the effect of raising the temperature of the futon. The description on the bag mentions dust mite protection, but I'm not sure how effective that is. Although unused, it has been stored at home, so the plastic bag may have wrinkles. No comments needed, immediate purchase welcome. #PollenProtectionCover #FutonDryingCover #YellowSandProtectionCover #FutonDrying