The philips avent microwave steriliser bag scf29705 is perfect for sterilising on the go as they are quick and easy to use sterilising can be done in 90 seconds and this effective sterilising kills 999 of bacteriagerms the bag has a sneak peek in the bag to check whether the disassembled parts are positioned properly in the bag for optimal sterilising and check boxes so you can keep track of the times you used the product the bag has a safe zone on the bag which can be safely grabbed when