O'Brien Men's V-Back Life JacketThe O'Brien Men's Flex V-Back Life Vest features a V-Back stretch panel. This comfortable and light-weight life jacket has a zip closure and two belts for security. Features O'Brien's BioLite material-BioLite is an eco-friendly material that looks and feels like neoprene but contains no rubber foam or Volatile Organic Compounds.Lighter weight than NeopreneSplit V-Back for maximum maneuverabilityZip closure and 2 belts for securityMultiple front and side hingesPWC RingSizes AvailableSmall (32" - 36")Medium (36" - 40")Large (40" - 44")X-Large (44" - 48")2X-Large (48" - 52")3X-Large (52" - 56")United States Coast Guard Approved.California Residents:WARNINGCancer and Reproductive Harm -P65Warnings.ca.gov