DAISO Soft Burn Removal Sponge (Stainless Steel Fiber) Set of 2 - Material: Polyurethane foam, stainless steel fiber, polyester Woven with stainless steel fibers, it effectively removes burnt-on food and stubborn stains. The sponge is wrapped in cloth for good foaming. Soft to the touch. Usable on: Frying pans (iron), iron pots, stainless steel products Unusable on: Plastic resin-coated products, glass, enamel, Frying pans (Teflon and other fluororesin coatings), Ceramics, copper, aluminum, wooden products Unused, but stored at home. We appreciate your understanding. [Instant purchase OK] (^^) ~✼Thank you for viewing✼~