Waterproof dog bed liners are perfect for protecting your dogs mattress reducing the need to wash it as regularly the waterproof dog bed liners slip over the mattress inner of your dogs luxury dog bed and act as a protective barrier to help stop animal dander and moisture from sinking into the mattresses features and benefits keeps your dog bed mattress fresher for longer easy to clean with damp cloth or in the machine perfect for all charley chau dog beds sizes