O’Neill Psycho Tech 5.5/4 Chest Zip Hooded Men’s Wetsuit
$609.95
Arguably the warmest wetsuit we carry. Sustainable TB4 Firewall technology radiates throughout with TB4 Duraskin Air Firewall in the chest and back.
DESCRIPTION
- O’Neill’s Psycho Tech range focuses on ultimate warmth and durability with high-performance recycled materials and water-tight double-sealed stitchless seams. Sustainable TB4 Firewall technology radiates throughout with TB4 Duraskin Air Firewall in the chest and back to shield against the cold while retaining and recirculating your body heat. Designed to keep you in the water longer, toasty, and stoked.
KEY FEATURES
- F.U.Z.E. Closure (Chest Zip)
- Redzone Water Resistant Zipper
- 360 degree Barrier With Drainholes and Anti-Flush Barrier (F.U.Z.E.)
- Super Seal Cuffs with Plasma Wrist and Ankle Seals
- Recycled Oyster Shells and Eco Carbon Black Infused Neoprene
- Recycled Dope-Dyed Yarn Jersey
- Aqua Alpha Solvent Free Neoprene Lamination
- Key Pocket with Loop
CONSTRUCTION
- Stitchless Exterior Fluid Seam Weld Technology with Interior Recycled TBX Tape
- Chest / Back: TB4 Duraskin Air Firewall
- Thigh / Butt / Shins / Calf: TB4 Firewall
- Arms / Shoulders: TechnoButter 4
- Entry: TechnoButter 4X
- PLUS (+) = 0.5mm Extra thickness for even more warmth
O’NEILL WETSUIT SIZE CHART

1 review for O’Neill Psycho Tech 5.5/4 Chest Zip Hooded Men’s Wetsuit
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Free shipping in the mainland U.S.
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Robert (verified owner) –
Tall size fits perfectly, I am 6’3″ 185 lbs. Very little water comes through this suit. Super flexible which is what I wanted. Also warm, I have used it into the 30’s