Stearns Work Master Life Vest The Stearns Work Master Life Vest is the finest work vest available. This vest includes soft comfortable closed-cell foam and encircling body belt with snag resistant buckle for quick adjustment. It has a hinged back panel for added comfort for the working person who needs to wear a life vest in their day-to-day work. It is capable of giving 17.5 lbs. (8 kg) of buoyancy and is USCG Approved Type III/V Work Vest. It is highly durable and can be used for a very long time. The Stearns Work Master Life Vest is designed for commercial use ensuring durability and long life in almost all water environments.