Balancing personal flair with top-notch performance, the O'Neill Bahia 2/1mm Back-Zip Long-Sleeve Springsuit is one of our favorite session partners in mild water temps. The stretchy, durable 2/1-millimeter UltraFlex neoprene allows us to move in freewheeling comfort, while the back-zip entry stays comfortably out of the way when we're paddling out for more.