The universal hose clip will replace the clip that came with your VestPac. It can also be used with the other clip to ensure the hose stays right where you want it to. The clip attaches to the shoulder strap and rotates so you can position the mouthpiece within easy reach. The rounded corners are designed to prevent chaffing. Simply push the hose into the open side of the clip so secure it. It will also attach to any other 1 or 3/4 strap.