Comfort, function and durability. The HD200 is everything the advanced sport diver could ask for. Fitted with a combination of Tech/Rec features and updates for 2013 that provide ultimate comfort and function. Heavy duty construction and innovative design make this BC the best in class. 1000D Cordura with PU lamination outer shell & 420D Nylon internal bladder Contoured, lightweight backpack with back pad, lumbar support, and a rolled neoprene comfort neck 10 lb (4.5 kg) interchangeable quick release weight pockets with new pinch and pull buckle 3 lb (1.36 kg) non-dumpable rear weight pockets System weight: 9.4 lbs (4.3 kg) Traditional 2" waist strap with Stainless buckle 2" Nylon waist strap with quick release buckle and 2" SS D-ring Comfort molded backpad 10 lb pinch and pull weight pockets Oval corrugated hose BLADDER SIZES: SM : 34 Lbs MD : 36 Lbs LG : 38 Lbs XL : 38 Lbs Size Guide: SIZE HEIGHT WEIGHT CHEST WAIST SM 5&';2"-5&';7" 120-155 30-40" 30-38" MD 5&';7"-5&';11" 150-185 34-44" 32-40" LG 5&';11"-6&';2" 180-210 38-48" 34-42" XL 6&';2"-6&';5" 195-240 40-50" 38-46"