Truck bedliner, or simply Bedliner, is a protector applied or installed into a truck bed. It can be used to protect the bed of the truck from impact and abrasive damage. There are two broad classifications of bedliners: "Drop-in" and "Spray-on/in". "Drop-in" bedliners are installed into a truck bed with limited preparation work, and are removable for cleaning. Spray-in bedliners require specific preparation to allow the coating to adhere correctly to the bed. How well the coating adheres will determine how long it will last.