Kaytee Open Living Waterproof Small Pet Habitat Replacement Liner is designed for the Kaytee Open Living Habitat Small Pet Habitat (sold separately). Even though the habitat comes with a liner, it’s always handy to have extra! It’s durable, waterproof and compatible with the quick-clip system, so it’s a piece of cake to remove and clean. To get the most use out of the liner, simply rotate it between cleanings. This purchase only comes with the liner—the habitat and the optional rooftop are sold separately.