Good to know- The steriliser fits up to 4 bottles, and also works on with breast pumps and soothers - you can have everything clean in only 4 minutes- If you leave the lid on, bottles will stay sterile for up to 24 hours, so it's perfect for switching on when you go to bed. Clean bottles will be waiting for you for night feeds or early mornings- You can also use the lid as a space saving, sterile surface to help you prepare your baby's bottles