The O'Neill Hammer Vest is an easy on, easy off pull over wetsuit vest with the Hammer Line's 100% Fluidflex construction for awesome flexibility. The arm holes are elasticized, and the Flatloc Stitched seams breath easy and won't chaff you up. The Hammer Vest also sports a boardshort interface system "The Connector," to keep your surf gear right where it belongs on your body.