PetSakes Pet Car Seat, 17 x 23 inch - Light Pink Our pet car seats are handmade with a special polyester high loft batting (not foam). Car seats are 6 inches deep. Sides are sewn to reiforce them, and strapping add for your cars seat belt to hook through. When washed according to manufacturer instruction we guarantee it to come out the same way every time. Measures 22 inches by 17 inches in width and 6 inch sides.