Airhead Comfort Flex Neoprene Watersports PFD, Small/Medium, Black/Silver Adult Dual Sized for Versatility, Flex Panels on the Sides and Rear make his the Most Comfortable PFD of all Time NeoLite Construction is Light Weight and Quick Drying Excellent Back Support Features 3 - 1 1/2" Wide Adjustable Belts Comfortable PE/PVC Foam Flotation