Perma-Tech liners are a flexible industrial-grade polyurethane that can be sprayed thicker for heavy-duty applications such as: street sweepers, salt spreaders, dump trucks, snow plows, horse trailers, Jeeps, and vans. Perma-Tech liners resist attack from most corrosive chemicals. Perma-Tech is the perfect solution for lining a truck that uses a 5th wheel hitch. It actually helps lock the hitch equipment to the truck bed. The liner is an all-weather product, maintaining its durable properties from -64F to 280F, while offering the maximum UV protection available in any truck bed liner. Perma-Tech's droplet texture surface offers more slip resistance than any other truck bed liner. Our liners do not utilize painted topcoats for color matching or sun protection. It is color matched and sun protected though 100% of the thickness, so there is no paint to get scratched off. Look for the Perma-Tech nameplate as a sign of premium quality.