When it seems too cold to wear boardshorts only, but not cold enough for a wetsuit, reach for the ONeill Reactor Long-Sleeve Top instead. It's the best choice to stay warm on those in-between days. Built to last with FluidFlex/UltraFlex neoprene, a perfect combination of stretch and durability. Featuring flatloc stitching for breathable seams and boardshort connectors for added convenience. The backzip entry system provides easy entry and exit with a water-resistant closure. Seamless paddle zones for added comfort Boardshort connector | Reactor Long-Sleeve Top - Black - M