The Glen Eagle BakTrak Rifle Sling comes with a soft molded back for extreme grip that also reduces sling related noise with its Rubber tread grip back. Features 1.25 inch heavy-duty webbing a thumb loop and Swivels tested to 500 pounds. Soft Molded Back Rubber Tread Grip Back 1.25-Inch Heavy Duty Webbing Thumb Loop Swivels Tested to 500 Pounds