The Arsenal life jacket from O'Brien is specially designed for paddleboarders. The vest's flotation is condensed and positioned in the front and back to allow for ultimate mobility. Mesh vent panel in the back keeps you cool and comfortable while you're paddling. Adjustable straps at shoulders and on the side allow easy customization of the fit. Reflective tape ensures better visibility. Easy zip front closure. Harmonized U.S. Coast Guard and Transport Canada Approved Life Jacket. Sizes: XS/S(28"-36"), M/L(36"-44"), XL/2XL(44"-56") Extra Storage - Zippered pocket and accessory attachment point High-Visibility Reflective Tape - Be seen even after the sun goes down Harmonized U.S. Coast Guard and Transport Canada Approved | Men's Arsenal MD/LG Green SUP Vest size M/L