O'Brien Women's Focus Neo Ski VestThe O'Brien Focus Neo Vest features O'Brien's BioLite Technology, resulting in a lighter weight vest that is eco-friendly. This vest is lighter than Neoprene vests and has wide armholes designed for comfort during water activities.Features: 4 Front Hinge; Breathable material; Zip closure and 2 belts for a custom fit; Coast Guard Approved; Sizes: Small; Chest Size: 32"-36"; Medium; Chest Size: 36"-40"; Large; Chest Size: 40"-44";