The Petmate Indigo Pad is tailored to fit perfectly to the shape and size of your Indigo Dog House. Designed with comfort in mind, the Indigo Pad has a water-resistant vinyl cover to keep pets cozy and dry. The durable vinyl cover protects the pad from wear and tear, providing long-lasting comfort. Pet parents can easily access the 1-inch thick foam padding from the zippered opening on the side of the pad. The foam padding is easily removed and replaced to keep pads fresh for pets. The Indigo Pad comes in 3 sizes to accommodate medium, large, and extra-large dogs.