The Onyx MoveVent Torsion paddle vest features mesh ventilation panels in the front and lower back, along with a unique vented foam back for added airflow. The mesh panel in back accommodates most canoe and kayak seats for paddling comfort. This vest has adjustable shoulder and side adjustments and a sculpted flexible foam design conforms to your body and stays in place when paddling. The Torsion vest has SOLAS grade reflective material for visibility, and a large expandable zipper closure pocket with drain holes. Marine whistle included. Available in X-Small/Small (28"-36" chest); Medium/Large (36"-44" chest); and X-Large/2X-Large (44"-56" chest) sizes. This personal flotation device (PFD) is U.S. Coast Guard and Transport Canada approved.