Highway Products' high-side toolboxes for pickup trucks sit and mount on pickup bed rails. They feature 1/8" thick marine grade aluminum construction, maximum storage capacity and come with a lifetime warranty. Theft-resistant T-handle stainless steel locks keep the user's tools in the box secure against break-ins and "A" grade automotive neoprene weather stripping keeps them dry. High-side boxes are available in many sizes to fit all truck brands and bed sizes.