Large and Sturdy for Cats 12 pounds or under. You don’t need a great amount cat litter with this product. Side walls are sturdy and hold up well under normal wear. Easy to Clean: Waterproof material can be wiped by damp cloth. Multi function: Lining on the inside is easy to get stuff out of the edges and corners with a flexible bottom. Lightweight and Portable: Collapses into a small convenient size that is light weight and transportable with your cat carrier.