"The Butler Creek Alaskan Magnum Rifle Sling combines the durable features of waterproof closed cell neoprene with Comfort Stretch backing to reduce felt weight and control bounce. Non-slip grippers on the backside of shoulder pad keep the sling securely on your shoulder. Four cartridge loops on outside of shoulder pad keep extra ammo within instant reach. The Alaskan Magnum Rifle Sling attaches to your rifle with Uncle Mike's QD 1"" swivels (included).Manufacturer model #: 39609."