Fully Accessorized Buoyancy Compensation Device with Quick-Release Weight Integration System. High strength 840D nylon is more resistant to erosion caused by long-term friction and salt water. The adjustable waist strap filled with air protects the diver's stomach when the jacket is inflated. 2 exhaust valves for buoyancy adjustment in any position and low pressure hose. Heavy duty backplate system, multi metal D Rings and quick release buckle for more comfortable and convenient use.