Extang Engineered - it really means something and it’s who we are. It began when our values and integrity met bold engineering excellence. A product that is so well designed, and built to such demanding exact standards, that it performs beyond the truck owner's highest expectations. Engineering is at the heart of why Extang is the number one selling truck bed cover brand in North America. Extang holds more patents than any other truck accessories company. We’ve perfected nearly every aspect of the truck bed cover and we refuse to leave well enough alone!