Long-lasting, serviceable, convenient sponge is the best gift for your car! Safe for paint. It is made of a specially selected material, enabling to turn car washing into a pleasant activity. It traps and isolates sand grains, preventing scratching of the surface. This is a vivid example of using the unique technology of open bubbles: during foaming and polymerization of a sponge material bubble walls burst thanks to the excess internal pressure and ensure absorbing properties equal to a natural sponge.