Low-Profile Angled Rails Low profile side rail angles provide a clean transition from the side of the truck to the top of the tonneau cover. AutoLatch AutoLatch mechanism automatically locks when closing the tonneau cover. The smooth action of the pull cord gives you an easy release when opening. SlideLock Additional locking mechanism on the passenger side: A slide action lock that is pushed to lock and pulled to unlock. This lock works in conjunction with a locked tailgate to give you ultimate security. XT Dial™ Tension Adjuster Patented EZ-DialTM tension control system with an oversized grip to fit you better. Front Element Seal™ The front element seal forms a tight barrier between your truck and cover. The Element Seal™ gives you double protection when combined with our integrated fabric flap. A virtual dam is created at the front holding water at bay and keeping your cargo safe and dry. Premium Storage uilding upon our popular Quick Clips™, we have added a new cab guard design which not only secures the tonneau cover compactly, but also prevents it from rubbing against the cab. Side Sealing System Equipped with a superior Velcro® hook & loop system that is incredibly functional. A continuous high strength seal running the full length of the truck box keeping out wind, rain and dirt. It easily disengages when opening the cover, allowing for a simple one person operation. This practical design is ideal for all weather conditions. Premium Cover™ Lifetime Warranty Premium Cover Lifetime Warranty covers all components, even the fabric, for as long as the original purchaser of the covers owns their truck.