Onyx Pro Caster Vest. U.S. Coast Guard Approved Type III Life Jacket / Personal Flotation Device (PFD). High performance angling vest providing excellent fit and function with the comfort of neoprene, combined with the durable performance of nylon. 200 denier nylon ripstop fabric outer shell for durability – resists snags and tears. Neoprene inserts in the sides and shoulders mold to the body for a custom fit and increased mobility.