The pack contains 2 bags with the brand of litter Catsan incorporated. Its installation is very fast and takes less than 20 seconds. The system is ideal for 46cm * 34cm litter max. Once installed, the litter has a duration of 7 days; This is a good time for an adult cat that poops only in his litter. With the type of underlayment diaper, urine are well absorbed. Once too soiled bedding, simply pull on the sides so that the bag is closed. The only downside is the locking system. Indeed, when the bag is closed it is not completely sealed so the smell and gravel can get out. Good product rather convenient.