The Rapid Diver system, complete with BC, air tank with pressure gauge and regulator, is designed for rapid entry of a diver into the water -- ideal for rescue teams, homeland security or military personnel that depend on quick response. With the universal fit feature, the unit can be donned by any team member even over bulky clothing/gear. The unit from ADS is small, compact and weighs less then 20 pounds, this means that is can be easily stowed onboard a boat or vehicle. There are several tanks available with the front mount system; the standard tank is 20 cubic feet.