The Jobe Segmented Jet Swim Vest Backsupport Men Black is back with an ISO-certified buoyancy rating of 50 newtons. With comfortable PVC foam and a high-quality front zip for quick entry, the Segmented Jet vest features innovative and comfort-enhancing features. These include a back support to support and protect the back, plus an adjustable waistband. Try your backsupport life jacket today!