Fine copper-threads gently remove persistent dirt / stuck on food - copper is a soft metal, which does not scratch. It frees pots, pans, and stoves from burned grime, does not leave scratches on enamel and stoves, and polishes the sink until it gleams. Double-layered for extra strength, extremely long-lasting, washable in the washing machine. Do not use on extremely delicate surfaces. Use wet only. 100% recyclable.