The Onyx MoveVent Dynamic paddle vest features a sculpted flexible foam design that conforms to your body and stays in place when paddling. This vest is designed using heavy-duty nylon fabrics to resist tears and punctures; and is available in dual sizing to accommodate all body types. a Mesh ventilation in front and back for breathability a Mesh panel in back to accommodate most canoe and kayak seats a Shoulder adjustments with neoprene comfort pads a Adjustable side belts a Durable zipper closure a SOLAS grade reflective material for visibility a Expandable zippered pocket with mesh drainage a Lash tab for small accessories a Marine whistle included a Nylon ripstop outer shell a U.S. Coast Guard approved and Transport Canada approved