O'Neill Men's Psycho Tech 4/3+mm Chest Zip Full Wetsuit

The Pinnacle of Cold-Water Performance. The O'Neill Psycho Tech 4/3+ is designed for those who refuse to let the season end. Featuring the legendary TechnoButter 4 (TB4) and the extra-thick "Plus" construction, this suit delivers 5mm warmth with 4mm flexibility—perfect for maintaining your "Liquid Flow" in the harshest conditions.

Elite Technical Features:

• TechnoButter 4 (TB4) Neoprene: The next evolution of stretch, infused with recycled graphene for increased strength and heat retention.
• TB4 Duraskin Air Firewall: Specifically placed in the chest and back to shield you from biting wind chill while you're behind the boat.
• 4/3mm+ PLUS Construction: An extra 0.5mm of thickness throughout (4.5mm body / 3.5mm limbs) gives you a thermal edge over standard suits.
• Stitchless Fluid Seam Weld: Completely watertight, double-sealed exterior seams that are more durable and flexible than traditional stitching.
• F.U.Z.E. Closure: A free-floating chest-zip system that keeps you dry and unrestricted during high-mobility maneuvers.

Built with sustainable materials like recycled oyster shells and eco-carbon black, this suit saves over 1lb of plastic from the ocean.