With around 5,000 nappy changes on your hands, you'll appreciate a little help to reduce the number of trips to the outside bin. Tommee Tippee Twist & Click Nappy Bin Refill Cassettes, Pack of 12. These refill cassettes are compatible with the Tommee Tippee Twist & Click nappy disposal system, offering an effective way to dispose of your baby's nappies and control odours. Each cassette contains an anti-bacterial film that locks away germs and odours. The twist and click mechanism ensures each nappy is individually sealed.