They also have a rubber lining on the inside making them waterproof and far more durable then cheaper alternatives, with the added bonus of making them anti slip. The easy fit seat cover set comprises of 2 pieces - one heavy duty cover for the driver’s seat with a hook & loop Velcro opening on both sides to accommodate arm rests, if your vehicle has them, and one double seat cover for the passenger’s side which has a hook & loop slit and Velcro opening for the for the middle seat belt and an adjustable hole for the buckle.