(Management number: mwt088pj) Nishikawa Dehumidifying Sheet Saranel Simply place it under your futon or bed pad, and the silica gel will powerfully absorb moisture and unpleasant odors. It can also be used to combat sweat odor and aging odor. Features a color-changing moisture sensor that lets you know at a glance when it's time to dry. Easy to care for! Just dry it when the sensor changes from blue to pink, and it can be used repeatedly. Material/Ingredients Surface: 100% Polyester Back: 100% Polyester Middle Material: Silica Gel B Type With moisture sensor Color: Blue Since this is a new, unopened, and unused item, returns are not accepted. Please refrain from comments unrelated to the product. Thank you!