Waterproof and slip resistant. The liquid will never go through the mat. Made of soft and durable Environmentally friendly composite materials, that is gentle for sensitive cat paws and easy to get rid of cat litters. Easy cleaning with double layered design. The open edge allows you to simply pick up and dump cat litters back to the litter box. With strong durability, it prevents damage from cat scratches. Dimensions: 550mmx550mm