The Peritas Cat Pads are designed to fit and function perfectly in the Tidy Cats Breeze Litter Box. They are made from high-quality plastic that is tested as one of the highest absorbent materials on the market. These cat pads hold more than 7 cups (over 1,600ml) and have an odor controlling feature that absorbs and controls urine odors for up to one week for a single cat. They also have a leak-proof design that ensures easy, clean, and leak-free disposal.