Each Angelcare refill cassette includes multi-layered barrier bags that keep bad smells at bay. The cassette only works with UK and Ireland version of the Angelcare nappy disposal system. It is easy to use with one hand and has a capacity of approximately 28 nappies (size 2). Each refill cassette will last up to 1 month and seals up to 180 nappies, depending on size. The nappy bags use less plastic (in weight) than other competitive systems. This set contains three refill cassettes for the Angelcare nappy disposal system.