The hands free sling mount attaches through the strap of the rear pack and may be tightened and secured. Quickly loosen the mount with a press of the unit releasing the sling. The mount features a universal compatibility that works well with almost any backpack and sling within the market. The rubber assists within the flexibility you would like to assure proper compatibility and a fastened seal. Overall, this small piece are often a valuable piece of kit that creates your day tons easier on the sector .