The Trieste Double Bladder Wings are designed for the diver that prefers a wing with a redundant bladder. The secondary bladder is designed to ensure proper buoyancy control in the event of primary bladder failure. Horseshoe style, redundant wings are the choice wing picked by divers that are not wearing a drysuit. The redundant bladder is utilized in the rare event that the primary bladder is rendered unusable. The power/oral inflator is the same on both bladders. Overpressure valves are located on the respective sides of each bladder.