The sterilizer bag you can use over and over again. Dr. Brown's 100% silicone Microwave Sterilizer Bag uses steam heat to quickly and effectively sterilize baby bottles, bottle parts, breast pump parts, pacifiers, teethers, and more. The bag holds two Narrow (8 oz/250 mL) or Wide-Neck (9 oz/270 ml) Dr. Brown's Bottles along with parts and accessories. To sterilize, pour 2 oz of water into the bag, add items, and microwave for 3 minutes. Sterilization eliminates 99.9% of bacteria and the yeast that causes thrush. Side-grip hooks allow you to handle the bag safely, and the flat base keeps the bag in a stable upright position. This reusable silicone bag is durable and a long-lasting alternative to disposable plastic sterilizing bags. It can also be used to store baby, household, or travel items when not being used as a sterilizer. Flexible for easy storage and on-the-go use. Dishwasher safe and BPA-free. WARNING: Only put microwave safe items in the sterilizing bag. If you are not sure if an item is microwave safe, contact the manufacturer.