Rectangular Sponge 100% Polyester by Magnolia Brush Sold out $2.85 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out Made of 100% polyester. The best man made sponge available. Holds as much water as a natural sponge. Recommended Use: For use in the tile and painting industry. Rounded corners prevent marring and digging into grout. Also good for washing cars, boats and windows. Length: 6" Width: 4" Height: 2"