O'Brien Junior V-Back Life Jacket - Blue/GreenFlex fit life jacket that moves with you featuring a flexible design that contours to the body for a secure, comfortable fit. It includes a split V-back stretch panel, multiple front and side hinges, and wide armholes to maximize mobility. Constructed with BioLite material, it's soft, lightweight, breathable, and eco-friendly and it's USCGFeatures 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; Harmonized U.S Coast Guard & Transport Canada Approved; Specification Weight Range: 77 - 125 lbs; Chest Size: 28" - 32";