Dr Brown’s Microwave Steam Steriliser Bags, 5 pceGo ahead and pack a days worth of breast pump parts, multiple baby bottle parts, and all the necessary accessories because cleaning up on the go is easier than ever with Dr. Browns Microwave Steam Steriliser Bags. With only a microwave and a little bit of water, you can quickly sterilise multiple bottles and pump parts, eliminating 99% of bacteria, mould, and the yeast that causes thrush. And with these multi use bags, youll create less waste and save