The suede and fabric brush is made up of multiple components. The stiff nylon bristles are the most used. These are most helpful when cleaning suede and fabrics. The stiff bristles can raise the nap of suede to revive the luster, clean off dirt, or remove scuffs and marks. The rubber side of the brush is like an eraser. Use this in conjunction with the nylon bristles to help "erase" marks. The rubber edge of the brush will help you clean hard to reach places on your boot or shoe.