Tusa Liberator Sigma BCD, Black (BCJ-3200) - Medium Ultimate Stabilizing Harness (USH) and Independent Harness System (HSI) provide ultimate tank stability and unsurpassed buoyancy control Stainless steel D-ring on right shoulder strap for accessory attachment Heavy duty 840 denier nylon shell for superior strength and durability Advanced Weight Loading System (AWLS) with two additional rear trim pockets OPEV quick inflate/deflate system