PETICON Back Seat Extender for Dogs, Hard Bottom Dog Car Seat Cover - Supports 400lbs, Rear Seat Pet Cover with Mesh Window, Waterproof Dog Hammock for Car SUV and TrucksBrand: PETICON Color: gray Features: Strong Support The PETICON back seat extender for dogs made of 8 sturdy hard bottom splice plates and 8 thick sponges, more durable and comfortable than other wood based boards and without any odor. The backseat cover extends 40% space and it can hold up to 400 pounds. The built in hard bottom plate and sponges can be removed for easy disassembly and cleaning of the car dog seat cover. The thick sponge allows dog