This brush is designed to clean and refresh suede and nubuck leather. The brass and nylon brush is designed for cleaning the suede footbed liner. Regular use will also keep the leather smooth and soft. The outside cleaning edge of the brush can be used to remove dirt and access hard-to-reach spots, as well as for stains on natural leather. The fine rubber brush can be used to comb the natural fibers/nap of suede leather and restore the look. The BIRKENSTOCK cleaning brush can be cleaned with soap and water.