Dr. Brown"s Sterilizer is uniquely suited to fit Dr. Brown"s Bottles. It sterilizes up to 4 bottles. It holds standard or wide neck bottles. The sterilizer is dishwasher safe, uses tap water and includes plastic tongs. This Bottle Brush has been designed for use with ALL Standard and Wide-Neck Dr. Brown"s Natural Flow baby bottles. The Dr. Brown"s Bottle brush features a combination sponge and bristle brush head for thorough, easy cleaning of all Dr. Brown"s baby bottles. At the base of the Bottle Brush, there are fixed chevron channels, designed specifically to clean nipples with ease. The Dr. Brown"s Natural Flow Microwave Steam Sterilizer Bags sterilizes parts from Dr. Brown"s baby bottles, eliminating 99.9% of most household bacteria and germs. They are designed to fit all Dr. Brown"s baby bottle parts, and they are perfect for steam cleaning while on the go or while traveling. Five sterilizer bags are included and each bag is reusable - up to 20 times. This offers moms 100 uses per retail pack.