- Tusa Liberator Sigma II BCD -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 8 lbs. (3.63 kg) to 10 lbs. (4.54 kg) of weight in each cartridge and two rear trim pockets can hold up to 4 lbs. (2 kg) 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. The key to comfort with the Liberator Sigma II BCD is its Independent Harness System (IHS). The IHS isolates the BC jacket's harness from the air cell, tightly supporting the tank even with changes in air cell inflation/deflation. The IHS prevents tank slippage and eliminates any gaps between the tank and your back. The Liberator Sigma II BCD uses TUSA's next generation IHS featuring an Integrated-Carry-Handle, additional adjustability to dial in a perfect fit