Turtle Wax Ultra-Premium 3-Layer Foam Applicator Pad has 3 layers of quality foam for optimum product distribution and buffing pressure. This kit includes (4) 4" 3-Layer Premium Foam Applicators. The foam applicators size makes it easy to evenly distribute product and more comfortable to apply product by hand for longer periods of time. The premium foam will not scratch any exterior surface and will leave paint with a showroom shine. The 3-Layer Foam Applicator is safe to use on paint, plastic, and wheels. These foam applicators are reusable and can be washed to preserve for multiple uses.