The Microwave Steam Sterilizer protects your baby from harmful bacteria, operating at a higher temperature than dishwashers. Sterilizing up to 4 Natural or Classic bottles at a time, it kills 99.9% of harmful germs. This lightweight, compact sterilizer is the perfect size for traveling. Stay-cool safety grips allow for safe handling and make it easy to sterilize breast pumps, bottles, cups and more while at home or traveling. The Microwave Steam Sterilizer uses the power of your microwave to create natural steam. Just add water and place it in the microwave for 2 minutes. Safety clips keep the lid securely closed and side grips stay cooler for safe handling. At full capacity, the sterilizer holds up to 4 9 ounces or 2 11 ounce mom easy bottles. Its interior rack can also support 2 mom easy Breast Pumps (non-electrical components only) and up to 4 breast milk storage cups and lids. You can also use it to sterilize pacifiers, non-metal utensils, and other microwave-safe baby items.