FREE SHIPPING
This item qualifies for Free Shipping! Details.
But fear not - there is plenty to explore...
Shop all O'Neill Shop sale O'NeillMEMBERSHIP
Earn up to 10% back in rewards. Learn more. Join Free.
EASY RETURNS
Take up to a full year to return your item! See our Return Policy.
LOWEST PRICE GUARANTEE
Find a better price? We’ll beat it by 5%. See our Price Match Policy.
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.
TechnoButter 3 – O'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 Smoothskin – Chest 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 Padz – Abrasion 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 Weld – A 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.