The Freedom Breast Pump has been designed to be easy to use, effective and comfortable. Because it only has 3 pieces, it's very quick and easy to clean and put together. The flexible cup moulds to the shape of your breast so it fits comfortably. Comes complete with steriliser box and milk storage container. The tommee tippee steri storage box can be used to microwave steam sterilize all of your breast feeding equipment or to sterilize 2 full size closer to nature bottles and accessories.