Onyx Universal Youth Life Jacket The Onyx Universal Youth Life Jacket is specifically designed for the general boating family who is looking for comfort, style and safety in an affordable life jacket. Designed for children 50 to 90 pounds, this life jacket features quick release buckles and two belts for a secure fit. Its 200 Denier nylon oxford fabric outer shell makes for extreme durability and long lasting use. Features 200 Denier Nylon Oxford Fabric Outer Quick Release Buckles Two Belts All