These are US Coast Guard approved, Type III life jackets (sometimes called personal flotation devices or PFDs), and meet all requirements for US Sailing. Type III life jackets are the most common among small boat sailors. They have more foam buoyancy than a buoyancy aid and are designed to keep a person facing upwards in the water, even when unconscious. This is the primary safety benefit over a buoyancy aid and why a proper USCG approved life jacket is recommended for most sailors, particularly youth sailors and those who are poor swimmers.