The Bebecom Microwave & Steam Sterilizer is a safe, accepted and intelligent way to kill up 99. 9 percent of bacteria on bottles, nipples, pacifiers, teeters, small toys and breast pump accessories right in the microwave. There's enough room to sterilize baby bottles and breast pump shields at once. This compact baby sterilizer fits all regular microwaves and works with both regular and wide-mouth bottles. The locking feature is designed to safeguard everything inside and prevents accidental opening.