The Drop Stop is the patented car seat gap filler. It prevents coins, phones, keys, makeup, pens, change, food or anything from falling down the gap between your car seat. It attaches to the seat belt catch so it will move with the seats and effectively stops anything you drop. The Drop Stop is made from high grade neoprene; it will expand to fill different sized gaps as well. It is a good quality and easy to clean. These cool things for your car that solve the problem of anything falling down between the console and car seat.