If you drive an open-bed pickup truck, you appreciate the great cargo-hauling ability it affords. But open bed trucks get worse gas mileage and leave your gear unsecured and open to the elements. Installing a bed cover (also referred to as a tonneau cover) makes the truck more aerodynamic and can save you a mile or more per gallon. It also helps protect cargo you want to keep clean and dry. A good bed cover will also help secure valuable gear, saving you from loading everything into the cab of your truck when you have to park someplace you don’t trust.