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.
O’Neill suits ship either from our Oregon shop (3-5 day transit time) or O’Neill’s warehouse (10-14 day transit time).
If your timeline is urgent, text us below for size-specific ETAs. Trust us, O’Neill gear is soooo worth the wait!
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
Only logged in customers who have purchased this product may leave a review.
Related products
Prolimit Oxygen Steamer Freezip 6/4 Women’s Wetsuit 2026
O’Neill Hyperfreak Fire 4/3+ Back Zip Men’s Wetsuit 2026
Extreme warmth. For staffers, this 4/3 has replaced a need for a 5/4 wetsuit. Updated Firewall and cuffs mean warmer and drier sessions without compromising the stretch!
O’Neill suits ship either from our Oregon shop (3-5 day transit time) or O’Neill’s warehouse (10-14 day transit time).
If your timeline is urgent, text us below for size-specific ETAs. Trust us, O’Neill gear is soooo worth the wait!
O’Neill Hyperfreak Fire 4/3+ Chest Zip Men’s Wetsuit 2026
Our best selling 4/3 wetsuit for several seasons here at Big Winds. Updated Technobutter Firewall and cuffs mean an even warmer and drier suit to keep you stoked on the water in the coldest conditions.
O’Neill suits ship either from our Oregon shop (3-5 day transit time) or O’Neill’s warehouse (10-14 day transit time).
If your timeline is urgent, text us below for size-specific ETAs. Trust us, O’Neill gear is soooo worth the wait!
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