Backseat extender for dogs turns the entire backseat space into a doggy lounge, and the car seat covers for dogs support 330lbs better prevents your dog falling out of the backseat, ensuring a cozier, safer, and freer experience for your furry friend at all times. % & , & - : Back seat cover for dogs is made of 6 layers of high quality fabrics perfectly sewn together with high frequency dot press technology