Tommee Tippee Twist and Click Advanced Nappy Bin Original Refill Cassettes, Exclusive Pack of 4, for Easy refill and Great value (pack may vary)Guaranteed odour and germ protection: Every nappy is individually wrapped, trapping unpleasant odours and killing harmful germs such as E. coli** No. 1 Nappy Disposal System in Europe: Parents across Europe love our Twist & Click nappy bins and refills as a quick and convenient way to block odours and keep their homes smelling fresh Fast and convenient: Our refills take less than 1 minute* to load into your nappy bin. Thats the fastest way to refill