Mixed superpro sponge made of flexible polyurethane, with a polyester base, it has a medium absorption degree and is ideal for general cleaning of all types of surfaces, in addition to being compatible with the use of acid-based cleaning products. to the advantages of the superpro sponge one side (orange color) more abrasive and resistant, but with a less degree of absorption. it is perfect for cleaning surfaces that need greater friction power. it is not recommended for use with acid-based products.