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O'Neill 5.5/4+ Psycho Tech Chest Zip Hooded Wetsuit

sku# 164924
O'Neill - 5.5/4+ Psycho Tech Chest Zip Hooded WetsuitO'Neill - 5.5/4+ Psycho Tech Chest Zip Hooded Wetsuit
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Product Info

Sick of endless flat spells, ankle high waves and crowded lineups? Time to make the switch to winter surfing. The O'Neill 5.5/4+ Psycho Tech Chest Zip Hooded Wetsuit is the ultimate cold water shred suit, with O'Neill's advanced Technobutter 3 neoprene offering unparalleled warmth with the comfort and flexibility of a spring suit. Reinforced seams and anti-flush barriers protect agains sudden cold water flushes, ensuring you stay warm and limber in frigid waves.

Product Details


TechnoButter 3 [Arms, Shoulders, Shins, Calves]O'Neills exclusive, maximum stretch, hydrophobic neoprene with featherlight ENVY foam rubber core. Ultimate warmth and comfort, built to last.

TechnoButter 3 Air-Firewall Smoothskin [Chest & Back]The most advanced insulative neoprene available with even more stretch than before. Trapped air technology with quick dry and wind proof properties. Psychotically warm.

TechnoButter 3 Firewall [Thighs & Butt]Light, insulating neoprene foam core with heat retaining thermal interior layer and quick dry properties. Stretchier than ever before.


F.U.Z.E. Chest ZipFront Upper Zip Entry uses a free floating zipper panel and anti-flush barrier with drain holes to keep you dry and feeling loose.

Water Temp

40° - 47°


Stitch-less Seam TechnologyExterior Fluid Seam Weld and Interior TB3X Tape on either side of a stitch-less seam takes wetsuit construction to the next level for reliable durability and low profile comfort.

Redzone Water Resistant ZipperUrethane coated offset zipper teeth interlock to stop leaks and keep water from entering the suit.

Fluid Seam Weld8mm silicone-based urethane sealed exterior with a triple glued and blind stitched interior. Watertight, durable, and ultra flexible seam.

Krypto Knee Padz

360° Barrier with Drain Holes

Super Seal Low Profile Cuffs

Wind-Proof Smoothskin

Plasma Wrist and Ankle Seals

Aqua Alpha Solvent Free Neoprene Lamination

PLUS (+) = 0.5mm Extra Thickness For Even More Warmth


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


  • Wetsuit Thickness: 5.5/4.5 mm
  • Wetsuit Fit: Chest Zip
  • Material: Neoprene
  • Seam Sealing: Fully Taped, Glued and Blindstitched Seams, Welded Seams
  • Manufacturer Item Number: 5338
  • Warranty: 1 Year

Other Notes

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



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