Butler Creek's comfort stretch design gives these slings a patented shock absorption action for greater comfort as well as snug, solid hold when shooting off-hand. The non-slip grippers hold the gun comfortably in place on shoulder carry. This revolutionary design makes your gun feel 50% lighter-and up to 100% more comfortable. The Alaskan Magnum sling carries four cartridges mounted to the sling. Manufactures Website Address www.butler-creek.com Warranty Information Limited lifetime warranty.