Philips Avent Microwave Steam Sterilizer protects your baby from harmful bacteria, operating at a higher temperature than dishwashers. Sterilizing up to four Natural or Classic bottles at a time, it kills 99.9 percent 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 in the microwave for two minutes. Safety clips keep the lid securely closed and side grips stay cooler for safe handling. At full capacity, the sterilizer holds up to four 9-ounce or two 11-ounce Philips Avent Classic or Natural bottles. Its interior rack can also support two Philips Avent Breast Pumps (non-electrical components only) and up to four breast milk storage cups and lids.