Now you can experience triple layer protection with less bulk. Vise is our toughest case. The base layer is an internal shock absorbing rubber cover. An additional layer adds Poron XRD Extreme Impact Protection to the sides and corners increasing the durability around the high-impact zones. And finally, we encapsulate this with an outer layer of a 2-piece external hardshell to further distribute the impact. The external hardshell pieces are locked-in place through our innovative slide-lock with the internal rubber shell. Add the detachable rotating belt clip for even more versatility while on the job site or lose it when you need more streamlined protection. Even with three layers of protection, it's as easy as snap, slide and lock in place on your iPhone. More function. Less fuss.