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O'Neill 3.5mm Psycho Freak Split Toe Wetsuit Boots

sku# 164919
O'Neill - 3.5mm Psycho Freak Split Toe Wetsuit Boots
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Product Info

Don't be the guy that shows up to that huge January swell only to have their day cut short with ice cold feet. The O'Neill 3.5mm Psycho Freak Split Toe Wetsuit Boots are made with buttery soft TechnoButter 3 neoprene and come fully seam sealed to keep your toes warm and your focus on the wave.

Product Details


TechnoButter Air Firewall InteriorThe 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 ExteriorO'Neills exclusive, maximum stretch, hydrophobic neoprene with featherlight ENVY foam rubber core. Ultimate warmth and comfort, built to last.


TB3X Taped Seams InteriorThe lightest, stretchiest neoprene seam tape ever. 0.5mm split neoprene is applied to triple glued seams with water based glue to keep you dry and loose.

Fluid Seam Weld Exterior8mm silicone-based urethane sealed exterior with a triple glued and blind stitched interior. Watertight, durable, and ultra flexible seam.

Dual Layer Ultra-Thin Outsole with Durable Heel Guard

Anatomical Fit

Arch Support

Anti-Flush Shin Strap



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


  • Wetsuit Thickness: 3.5 mm
  • Material: Neoprene
  • Seam Sealing: Fully Taped, Glued and Blindstitched Seams, Welded Seams
  • Warranty: 1 Year

Other Notes

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



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