Have you ever been underwater and due to Tunnel-Vision" caused by your Mask Fumbled" for your Power-Inflator Mechanism to Adjust-Buoyancy? If this Scenario is familiar eliminate the problem with the TUSA Mounting Strap. The Active Purge Assist System (A.P.A.) Mounting-Strap is a Universal Accessory that allows the Active Purge Assist System to be Routed-Underneath-the-Left-Arm and on the BCJ's Left-Side Pocket. This Optional Mounting Location is Streamline and Allows for Easy-and-Quick Buoyancy Adjustment just above the hip. Velcro Strap Accessory is covered by a 12 month limited warranty.