The Onyx Outdoor™ Universal Oversize Sport Flotation Vest is made of lightweight, durable foam material that contours to your body and will not hinder mobility, allowing you to stay active and comfortable. The vest works best in calm, inland water where a fast rescue is likely. The roomy pockets are great for storing gear, and the D-ring attachment is convenient for small accessories. For adults who weigh 90 lb. or more.