asah RSA Rail Sling Attachment/Support Rail Width 20mm Ambidextrous design allows you to quickly adjust the length with a simple pull of the strap to tighten to the perfect position. Metal snap hooks attach to most systems, brackets, or attachment buckles and ensure rapid ambidextrous deployment and maneuverability. Release clip and steel sliders allows for one handed adjustment and rapid removal. Premium Heavy Duty Chafe Resistant Nylon Webbing, durable High Impact Polymer Composite parts,long-lasting build quality. Shoulder pad provide high levels of grip to reduce slippage prevent shoulder strain so you will feel more comfortable.