The O'Neill Women's Hyperfreak 4/3mm+ Chest Zip Fullsuit Wetsuit is O'Neill's coldest-water women's weapon — TechnoButter 4 neoprene and Fluid Seam engineering for extreme warmth and zero-compromise performance in frigid lineups.

Key Features:

• TechnoButter 4 Firewall — Heat-recirculating interior panels at the front, back, thighs, and seat lock in body warmth even in the coldest water.
• F.U.Z.E. Chest Zip Closure — 360° anti-flush barrier with drain holes keeps cold water out during duck dives and wipeouts.
• 4/3mm+ Thickness — Extra 0.5mm warmth over standard 4/3; built for fall and winter sessions in cold-water lineups.
• Triple Glued & Blindstitched Seams — Exterior Fluid Seam Weld technology creates a watertight finish from shoulder to ankle.
• Recycled Materials — Oyster shell and eco carbon black-infused neoprene plus recycled dope-dyed yarn jersey.
• 3D Tapered Wrist & Ankle Seals — Segmented seals at the cuffs minimize flushing for all-session warmth retention.

O'Neill invented the modern wetsuit, and the Hyperfreak line is where that legacy meets cutting-edge thermal technology. The 4/3mm+ keeps women surfing longer, performing better, and feeling less of the cold — the go-to coldwater suit for serious surfers who refuse to come in.

Sizing: Available in sizes 4–14 including tall options. Refer to O'Neill's women's size chart for chest and height measurements.

Care: Rinse inside-out with fresh water after each session. Hang on a wide hanger away from direct sunlight. Do not machine wash or tumble dry.