Tonneau covers are a popular add-on for truck owners looking to protect their truck bed and its contents, but is a tonneau cover actually waterproof?

We may receive a commission on purchases made from links. Truck bed covers, also called tonneau covers, are popular with many pickup truck owners, especially those who like to use their truck beds.

Ever thrown all the stuff you need for an adventure into the bed of your truck, take off down the road, only to arrive and realize that not everything made the journey with you? That is just one of ...