Undercover Undercover is the new standard in tonneau covers as the lightest hardshell tonneau on the market weighing only 58 pounds! Undercover is durable, tough and impact resistant. The patented X-effect design and advanced polymers give this tonneau cover unparalleled strength and durability at a fraction of the weight and less cost than fiberglass. Undercovers standard no drill, clamp on installation allows for easy removal. Made of heavy duty steel with powder coated frame rails, Undercover adds a sleek styled contour and custom fit to your truck. Hydraulic struts make opening and closing a breeze, and Undercover is weather-tite to keep rain, snow and other elements away from your truck bed and cargo. Dual lock points with wrap over tailgate locking design keeps your cargo secure. Undercover is paintable to match your truck.