O'Neill Men's Reactor-2 2mm Pullover Surf Vest The Reactor-2 is engineered for performance in a value driven package. A perfect combination of stretch and durability. Fresh colors and graphics with style that's built to last. Pullover Seamless Paddle Zones Strategic Seam Placement Key Pocket Fluid Foam/UltraFlex Flatloc Stitched (Breathable Seams) Wind-Resistant Smoothskin Boardshort Connector