This Nûby™ Bottle and Nipple Brush is two brushes in one. The nipple brush conveniently stores inside the ventilated handle when not in use. The vents in the handle allow the nipple brush to air-dry completely. The hooked handle provides easy hanging. Both brushes have soft, durable nylon bristles to sweep away residue easily. There is even a sponge tip to clean hard-to-reach areas!