The Boulder Rifle Sling by Allen with BakTrak technology features a tacky back made from rubber gripping dots to grip your shoulder and reduce sling related noise. The face of the sling has a panel made from flexible material that helps to keep the sling from twisting while on your shoulder.FeaturesBakTrak is a Tacky Backing on the Sling Made from Rubber Gripping DotsOne Hand, Quick Adjusting1.25-Inch Heavy Duty Webbing and a Thumb LoopSwivels are Tested to 500 Pounds