Each 28 FT long refill, Use Diaper Disposal Systems ,Compatible with Diaper Genie Select Pail, Classic Pail, Compact Pai,Square Pails ,Perfect Baby Shower Gift for Pregnant Women! The refills use the best material, and each refill is made of 7 layers film The refill bags are easy to assemble, please follow the manual in the package. Easy to assemble, simply pull out a bit of film, push it through the center of the cartridge and tie a knot at the bottom. Then, open the lid and funnel of the pail, place the cartridge on top, and push the refill all the way. Simple installation can save you a lot of time. Package: 6 pack of refills, 1 user manual and a Non-original cartridge are included