Hard Bottom Large Pet Car Seat Cover Extender Protector Dog Hammock Mat for NEW Specification Material: Oxford Fabric Cotton PP PlateWaterproof: YesMachine washable: Yes  Features Hard-bottomed Car Back Seat Extender -The back seat extender has three built-in sturdy load-bearing plates. this cover has strong support up to 150 kg, and the flat hard bottom also makes it more comfortable for dogs to lie. The seat cover contact area is 62cm x 131cm, which can completely cover the back seat area of the car and is suitable for most cars. Particular Mesh Visual Window -The mesh breath window allows your dog to easily enjoy the air conditioning. It also helps your pets keep calm as see you clearly through the window when traveling. Multiple protections -In order to make the cover more stable, we use two safety anchors to fix the bottom of the cover, four adjustable headrest straps to fix the upper part of the cover, the side wings prevent the dog from sliding sideways. In addition, extra dog harness safety belt fully protects your pet's safety.  Package Includes 1 x Hard Bottom Car Back Seat Extender for Dogs 1 x Dog Harness Safety Belt