The McKee's 37 Big Gold Sponge is made of the softest foam available. This is an easy to handle cross cut design. Have you ever noticed swirl marks or scratches with other sponges? You will not experience that with the McKee's 37 Big Gold Sponge. The cross cut design helps keep grit and dirt away from the paint as it being washed. The absorbancy of this sponge enables it to hold an abundant amount of wash solution for conventional and rinseless applications.