The deuce Tonneau cover is really one of the most useful and fuctional Tonneau covers available, and it's made by a leader in the industry, Truxedo, all with a full lifetime manufacturer warranty. Truxedo is one of those Tonneau cover manufacturers that always seems to think of everything, and the deuce includes every little detail down to the velcro. The deuce Tonneau cover features Truxedo's floating velcro that slides in the rails to allow for expansion and shrinkage in the vinyl Tonneau cover in fluctuating temperatures. Other Tonneau covers have a fixed velcro rail where the vinyl cover pulls away from the sides when the cover shrinks in colder temperatures. Floating velcro is 1 of 2 automatic tension adjusters that makes sure your Tonneau cover stays snug and sealed. The other automatic adjuster sits in the folding hinge and self-adjusts to keep the Tonneau cover tight when folding open and closing, and during fluctuating temperatures.