Skip to content

O'neill Psycho Tech 5.5/4MM Chest Zip w/Hood

SKU: ONW339-S
Sale price $609.95

Shipping calculated at checkout

Size

Only 1 in stock

Spend $100 to get free shipping (surfboards/oversized excluded)

Shop with confidence

  • Fast shipping
  • Easy exchanges
  • Trusted reviews
  • Secured Checkout
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Mastercard
  • Shop Pay
  • Visa

O'Neill Psycho Tech Wetsuit

Description

O'Neill’s Psycho Tech range is engineered for ultimate warmth, durability, and high-performance comfort. Built with recycled materials and water-tight, double-sealed stitchless seams, this wetsuit is designed to keep you warmer, longer.

Featuring advanced TB4 Firewall technology, including TB4 Duraskin Air Firewall in the chest and back, it shields against cold water while retaining and recirculating body heat. The result is a wetsuit that keeps you in the water longer—warm, comfortable, and ready for more.

Features

  • F.U.Z.E. chest zip closure system
  • Redzone water-resistant zipper
  • 360° barrier with drain holes and anti-flush protection (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
  • Stitchless exterior fluid seam weld technology with interior recycled TBX tape

Material Breakdown

  • Chest / Back: TB4 Duraskin Air Firewall
  • Thigh / Butt / Shins / Calf: TB4 Firewall
  • Arms / Shoulders: TechnoButter 4
  • Entry: TechnoButter 4X

Additional Info

  • PLUS (+): Adds 0.5mm extra thickness for increased warmth