The Zeagle Pro Expansion Bladder has 37lbs lift capacity. Bladder has dual rear pull dump valves, the Bx Power Inflator that comes standard on all Zeagle BC Bladders, and will work with any other brand of BC with a 1" flex hose. Bladder outer cover is manufactured from strong and durable nylon material with a urethane inner cell. The unique Bx Inflator is designed to allow you to really rinse out the bladder of your BC. Simply unscrew the Bx Coupler, screw on a standard garden hose, turn the water on and super rinse and clean the inner bladder.