The Highly-Anticipated BC-0101 Liberator Sigma II Buoyancy Compensator is a Heavy Duty, Wrap-Around Jacket Style BC that utilizes Tusa's Advanced Weight Loading System and Ultimate Stabilizing Harness, which ensures Security-and-Stability. With its Two-Large, Double-Zippered Pockets with Mesh Drainage, you can Maximize Utility and Function. Tusa's Advanced Weight Loading System (AWLS) allows the diver to insert weights into the weight-cartridges and loading them easily into the front of the BC jacket. Additionally, with weight distribution to the shoulder area, the weighted-down feeling that is traditionally associated with weight belts is eliminated. Weight-Cartridges can accommodate from 8lbs (3.63kg) to 10lbs (4.54kg) of weight in each Cartridge and two Rear Trim Pockets can hold up to 4lbs (2kg) in each Non-Releasable-Pocket. The AWLS Weight Cartridges are easy to release in an emergency, but the safety lock makes sure that they do not release accidentally.