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O'Neill 4/3+ Psycho Tech Back Zip Wetsuit

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O'Neill 4/3+ Psycho Tech Back Zip Wetsuit

sku# 203166
O'Neill - 4/3+ Psycho Tech Back Zip Wetsuit
Model Info


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Product Info

The O'Neill 4/3+ Psycho Tech Back Zip Wetsuit is the real deal. It's engineered with TechnoButter 3 for reliable warmth in cold water and comes fitted with the Z.E.N. Zip Closure for an anti-flush barrier. Get your mind in a warm place when the swell finally arrives in the O'Neill 4/3+ Psycho Tech Back Zip Wetsuit.

Product Details


TechnoButter 3O'Neill's exclusive, maximum stretch, hydrophobic neoprene features 3 layers of material. The maximum stretch hydrophobic jersey exterior stays flexible and dry by shedding water for the lifetime of the suit. An Envy foam rubber core features featherlight warmth through the use of a microscopic air-cell rubber formula that increases the insulation factor by decreasing mass. Finally, a pre-stretched interior jersey retains its form for maximum flexibility and snaps back to hug the body for ultimate warmth and comfort. Built to last.

TechnoButter 3 Air-Firewall SmoothskinChest and Back


Z.E.N. Zip Closure (Back Zip)Z.E.N. ZIP (back) entry system with free floating zipper panel and anti-flush barrier-2 with drain hole, keeps you warm and unrestricted.


Krypto Knee PadzAbrasion resistant and made of high-stretch neoprene. The panel has an ergonomic shaping designed to extend the life of the wetsuit and protect your knees.

Fluid Seam WeldA revolutionary seam construction that utilizes an 8mm non-chafing high-grade silicone-based urethane applied in liquid form to the outside of a glued and blindstitched seam completely blocking out water without restricting flexibility.

Stitch-Less Seam Technology

Super Seal Low Profile Cuffs

Anti-Flush Barrier

Plasma Wrist Seals

Redzone Water Resistant Zipper


Always rinse thoroughly inside and out with fresh water after every use. Hang to dry.


  • Wetsuit Thickness: 4/3 mm
  • Wetsuit Fit: Back Zip
  • Material: Neoprene
  • Seam Sealing: Glued and Blindstitched Seams, Welded Seams
  • Manufacturer Item Number: 5335
  • Warranty: 1 Year

Other Notes

O'Neill products can only be shipped within the United States and Canada



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