[Phthalate Free EVA Material] - This 40cm x 50cm litter box is made of lightweight and durable EVA material, soft and secure to conform to your cat’s paws [Honeycomb Top Layer] - 10mm in size The hole allows cat paws and the litter box to fall off the next layer easily. It catches cat litter easily and prevents cat litter from being tracked or spilled on the floor [Waterproof Backing] - The waterproof backing is laminated, which prevents liquid penetration and prevents urine and odor from the floor reach. In addition, the non-slip bottom does not move easily under sinks, shower heads, etc. Can be washed and dried quickly You only need to remove the top layer and discard the waste trapped in the bottom layer or throw it back into the litter box for recycling