ScubaPro KnightHawk BC Retractable air bladder offers the ultimate in streamline design and significantly decreases drag Adjustable cummerbund has a quick-release buckle Four stainless steel D-rings offer diver plenty accessory attachment options Two zippered pockets can be rolled up and stowed out of the diver's way when not used Two front quick-release weight-integration pockets hold up to ten (10) pounds of weight