The O’Neill Hyperfreak 1.5mm Long Sleeve Top feature our exclusive Technobutter 3 material, lighter and more buttery than ever, 20% lighter with 30% less water absorption. The HyperFreak Series defines functional warm water gear. The HyperFreak Tops feature our exclusive Technobutter 3 material, lighter and more buttery than ever, 20% lighter with 30% less water absorption. The HyperFreak Series defines functional warm water gear.