The Scrub Ninja Nylon Interior Wedge Sponge combines the scrubbing ability of a nylon brush and the product distribution properties of a sponge in a single tool. Quickly and efficiently clean leather, vinyl, and other interior surfaces with a perfect balance of aggressive scrubbing and the gentle touch of foam. The nylon bristles work just like a brush, gently agitating the surface to remove stuck on contaminants. The built-in benefit of the Scrub Ninja Nylon Interior Wedge Sponge is right in the name. It's the foam or sponge core. Spray product directly onto the face of the Scrub Ninja Nylon Interior Wedge Sponge or on the surface. Either way you choose, the foam core will help carry your preferred cleaner across the surface and ensure you're not dry scrubbing the surface!