The Switlik Aviator Vest (Model EV-35) is a stylish new design that provides the most comfort ever offered in a constant wear life vest. Suitable for pilots, crew or passengers, the Aviator is ergonomically shaped to drape over the wearers shoulders, unlike traditional yoke style vests that hang from the neck, leading to discomfort and fatigue. Substantially lighter (1.3 lbs) than previous designs, the Aviator offers 35 lbs. of buoyancy in a single inflatable cell, with a unique three layer cell configuration, so that if the primary cell is compromised, a second cell is available providing another full 35 lbs. of buoyancy. So thin and comfortable, you may forget you're wearing it!