This set of 5 Philips Avent Microwave Steriliser Bags SCF297/05 will quickly steralise up to 3 bottles, or one breast pump, in a mere 90 seconds. All you have to do is pour 60ml of water into the bag, the items you want to be clean, and microwave. When taking them out of the microwave, don't worry about it being hot because there is a Safe Zone which you can confidently touch. These microwave steralising bags are so convenient and easy to store that they are perfect for when you are travelling or away from home. You can feel reassured too that these steralising bags will kill 99.9% of germs. Use the bag's Sneak-peek to check all the parts inside are well positioned for the best clean possible. You can use each bag up to 20 times, and have tick boxes so you can keep track of your useage.