We all like butter-and that includes the buttery feel of the HyperFreak 1. 5mm Long-Sleeve Wetsuit top, which features O'Neil's exclusive Technobutter 3. 20% lighter with 30% less water absorption than before, the Technobutter 3 material feels super soft against our skin with insulation for our core and plenty of stretch for surfing, swimming, and stand-up paddle-boarding. Our favorite pullover wetsuit top is now easier on the environment, too, with Aqua Alpha Solvent Free Neoprene lamination-a water-based glue that's free from toxic solvents that harm the water we love.