Most Advanced Way to Sterilize All Brands of Bottles, Pump Parts and Accessories: Uses natural steam to kill 99.9% of harmful bacteria, mold & the yeast that causes thrush; Compatible with plastic, silicone or glass baby bottles and accessories Largest Capacity: Holds 8 bottles, 2 full breast pump part sets & accessories from any brand; Sterilize wide-neck or narrow-neck baby bottles, sippy cups, pacifiers and breast pump parts such as flanges, shields, collection cups & valves/membranes Most Modular - 4 Configurations: Use 4 different ways to meet your needs; Features large lower bin, shorter upper bin and unique accessory tray Built-In 48 Hour Sterile Storage and Easy to use Push-Button System: Products remain sterilized for up to 48 hours when left in the unopened sterilizer; No need to use a drying rack; Operate at the touch of a button with the single on/off function Stainless steel heating plate protects against rust and hard water build-up