It is constructed of a high-tech thermoplastic rubber, not to be confused with the open cell neoprene slings currently on the market. This construction and its unique design enable it to be a tighter fit to the stock than nylon or leather for any rifle or shotgun. The Ultraflex Sling stretches to fit comfortably; gripping your shoulder, thus keeping your firearm secure on your shoulder where it belongs. The stretch-ability allows it to be shouldered to a three-quarter backpack style without any moving parts. The Ultraflex Sling can also be extended in length to become a front and ready carrying and shooting sling. It is impervious to the weather, quiet, non-slip, shock-absorbing, UV stabilized and stays flexible to 40 degrees below zero.The Ultraflex Sling comes with Gorilla swivels and is the ultimate in a shooting and carrying sling. This Sling does what all slings should do, but don’t. It works.