Roll-N-Lock's retractable tonneau covers retract into the bed bulkhead eliminating the need to lift a hinged tonneau cover. The one piece clamp-on track design eliminates drilling the bed rails on most trucks and reduces installation time as well as perimeter leakage. The integral tailgate locking system automatically secures the tailgate without the use of add-on accessories. This patented feature includes a low-profile thumb lever for quick, easy positioning or latching without the use of a key. The body construction of Roll-N-Lock's V-Series is a subtly textured fade resistant vinyl laminated to an interlocking aluminum substrate. This configuration eliminates noisy road flutter at any speed.