O'Neill HyperFreak 4/3+ Chest-Zip Hooded Fullsuit — built for cold lineups where warmth and mobility can't be a trade-off. The HyperFreak is O'Neill's top-of-the-line wetsuit, built on UltraFlex 3 limestone neoprene for unrestricted paddle reach and pop-up speed.

• UltraFlex 3 Neoprene — O'Neill's most stretchy neoprene, 30% more flexible than standard foam
• TechnoButter 3x Interior — ultra-soft, fast-drying lining that stays warm even when wet
• FluidSeam Welded Seams — fully sealed internal tape construction with zero stitch-through, virtually flush seam eliminates water entry points
• Chest Zip Entry — recessed chest zipper dramatically reduces water flushing vs. back zip; stays closed through wipeouts
• Integrated Neoprene Hood — contoured hood seals heat at the neck and head for sessions in 50–60°F water
• Smooth Skin Chest Panel — wind-resistant exterior keeps core temp locked in while paddling out

The 4/3+ thickness (4mm torso, 3mm arms and legs) is ideal for cold-water surfing in 50–62°F conditions. Enough insulation for early morning winter sessions without sacrificing the arm mobility you need to paddle hard.

Available in men's sizes S–XXL. Refer to O'Neill's fit guide — if between sizes, size up for comfort. Machine wash cold, hang dry. Do not tumble dry or leave in direct sunlight.