Astral Men's Ronny PFDDesigned for maximum comfort, the Astral Ronny PFD is the answer to high back kayak seats. Featuring the Thin Vent back design and a variety of easy access pockets, the Ronny is the ultimate lightweight life jacket. Astral's Thin Vent Back creates an extremely comfortable PFD no matter what seat your leaning against, even kayak seats with high backs. A ventilation channel in the 1 2" foam back panel combined with a mesh liner lets heat and moisture