O'Brien Men's Flex V-Back Neo Life Jacket - Black / GreenStay safe and comfortable on the water with this Flex Fit life jacket, designed to move with your body. It features a flexible back panel, wide armholes, and multiple hinge points for better mobility and all-day comfort. Made with lightweight, breathable BioLite material, it's soft, eco-friendly, and quick-drying. The front zipper and two hidden adjustable belts ensure a secure fit that stays out of the way. Approved by both the U.S. Coast Guard and Transport Canada.Features Flex Fit - Accommodating design that stretches and wraps around the contours of your body; Split V-Back Stretch Panel - Maximum maneuverability and comfort; BioLite Construction - Soft, lightweight, breathable, and eco-friendly; Zip Closure with Two Concealed, Adjustable Belts - Easy entry, secure fit, and belts that will stay out of the way; Multiple Front and Side Hinges - Enhances range of motion; Wide Armholes - Improves mobility; United States Coast Guard Approved. ; Sizes Available Medium (36" - 40"); Large (40" - 44"); X-Large (44" - 48"); 2X-Large (48" - 52"); 3X-Large (52" - 56");