The Automobile Back Seat Hammock Protector® creates a barrier to keep pets from climbing into the front. 600 denier nylon material is soft and sturdy. Adjustable straps attach around car seat and headrest, also attaches easily to back bench and headrests of most vehicle. Open velcro seams allow space for backseat passenger. Additional straps on the back side help the hammock secure to your seats. Adjustable straps attach to car seat and head rest.