O’Neill Psycho – Complete Series Overview

O’Neill is the oldest surf wetsuit brand in the game, and the Psycho series is their high-end selection of wetsuits. Down below you’ll find a brief overview of the suit’s ins and outs before committing to one suit.

o'neill psycho series wetsuits, gloves, hoods and boots


Table of Contents

O’Neill Psycho

How To Choose




Boots, Hoods, Gloves


The Psycho series by O’Neill is a top-shelf production featuring their greatest technologies so far. Maximum mobility, comfort, warmth, and durability – the Psycho lets you feel warm and comfortable throughout those crazy swells out there no questions asked. An ideal choice for young groms, or athletic men and female surfers!


3/2 full wetsuit
4/3 full wetsuit
5/4 full wetsuit
5.5/4 hooded
Boots, hoods, gloves


Price: 4/5
Technology: 5/5
Flexibility 5/5
Performance 5/5
Design: 5/5
Sizes: 4/5
Types: 5/5

Total Score: 4.8/5

oneill company logo

O’Neill Psycho Review

The ultimate high performance cold-water surf wetsuit. Built with ultra gooey TechnoButter 3 Neoprene and ultra-minimal seam styling offering unrestricted mobility, enhanced durability, and incredible fit.

What are the differences in the O’Neill Psycho Series wetsuits?

  • Psycho One F.U.Z.E (Front Upper Zip Entry) – Patended Chest zip entry with Z.E.N’s barrier. Minimal seam madness. CZ = Chest Zip = Psycho FUZE. Watch The Video.
  • Psycho One Z.E.NBack zip entrance wetsuit with O’Neill’s patented zipper system. Reduced floating feel, short zip with Z.E.N collar to keep the water out. BZ = Back Zip = Psycho ZEN. Watch The Video.
  • Psycho TECH – Lightweight, yet the warmest cold-water wetsuit. More insulation & quick-drying properties. Improved ease of entry. Fluid Seam Weld, TB Fire Wall Smoothskin. Triple glued & blindstitched. Mid flexibility / mid warmth temperature rating.
  • Psycho FREAK – Best of the best! The lightest firewall on the chest area, supers seam welds. Technobutter 2 Air-Insulation neoprene. Best performance & warmth, no stitchings with the highest warmth rating. Also, the most expensive of the bunch.

PRICES: #1: Psycho Freak #2 Psycho Tech #3 Psycho One


(TB) Technobutter 3 Neoprene

O’Neill’s exclusive new pre-stretched neoprene with featherlight, ENVY foam rubber core.
Ultimate flexibility, warmth, and comfort – built to last!

Single Fluid Seam Weld

O’NEILL’S EXTERIOR FLUID SEAM WELD is a revolutionary seam construction that utilizes a non-chafing high-grade, silicone-based urethane applied in liquid form to the outside of a glued and blindstitched seam completely blocking out water without restricting flexibility.

Patented Z.E.N. Back Zip entry with drain holes

O’Neill’s innovative patented Z.E.N. Zip Entry system is the most imitated entry/closure system in the world. This free-floating exterior mini zip allows for a zipperless feel and stops water from entering the wetsuit. Pullover internal seal that blocks out water for maximum performance. Water that penetrates the Z.E.N. Collar or Super Short Zip is blocked by the Barrier-2 and forced out the drain hole.

F.U.Z.E. Chest-Entry System

O’Neill’s exclusive F.U.Z.E. (Front Upper Zip Entry) system offers a fresh alternative. Using the same free-floating zipper technology as our patented Z.E.N. ZIP closure. The F.U.Z.E. closure keeps you dry and allows unrestricted flexibility.

Double super seal neck

A watertight, toasty warm two-layer design featuring a 360˚ smooth skin interior lining, widely adjustable with a secure lockdown.

Strategic Seamless Paddle Zones

An ergonomic, seamless under-sleeve panel that allows for unrestricted motion and eliminates rashing. Flexible and unique design that utilizes minimal seam placement for comfort.

Sidewinder S-Curve seams

Sidewinder S-Curve seams

Krypto Knee Padz

Abrasion-resistant, high stretch neoprene panel with ergonomic shaping for comfortable durability. The flexible and unique design utilizes an extended knee pad for added durability.

External key pocket with loop

Located along the lower leg inseam – An abrasion-resistant, high stretch neoprene panel with ergonomic shaping for comfort and durability. Constructed with Fluid Seam Weld and UltraFlex DS neoprene, this key pocket has added strength, easy access, and completely secure.

WASHING INSTRUCTIONS: Rinse with cool water and drip dry out of direct sunlight.

READ MORE: How to take care of your wetsuit!

O’Neill Psycho Cons: After reading through the feedback section on Amazon, some size XL+ wetsuit owners claimed the suits were falling apart or letting the water in. No Shorty or Long John on the listings. Also, the limited size options are a con, but I guess that’s expected from a suit that’s performance-driven.


The Psycho series is the best cold-water wetsuit that O’Neill has to offer!

Key Factors When Choosing A Wetsuit

  1. TYPE – Determine which type of wetsuit do you need: Chest/Back-Zip, short sleeve, or a full wetsuit.
  2. THICKNESS – Choose the right thickness for the season.
  3. SIZE – Make sure you get exactly the right size. When you have to choose between two sizes, choose weight over height. O’Neill’s size chart is pretty spot on!

o'neill wetsuit thickness recommendations

Check out the SIZE Guides down below!

FIY: Picking the wetsuit regards to the thickness recommendation chart by O’Neill, there are more factors to take in consideration when choosing a wetsuit for surfing: Including body type, activity level, outside climate and so on. This most likely won’t concern most of us, but there’s still some room what the charts can’t fill!

O’Neill Psycho for Men

o'neill psycho wetsuit models

Men’s O’Neill Hyperfreak Size Guide

from 168cm to 193cm / 5’6″ to 6’4″
from 52kg to 122kg / 115 lbs to 270lbs

5.5/4 chest-zip Psycho Tech Hooded

4/3  back-zip Psycho Tech

3/2 back-zip Psycho Tech

4/3 FUZE chest-zip Psycho 1

4/3 ZEN back-zip Psycho 1

3/2 FUZE chest-zip Psycho One

3/2 ZEN back-zip Psycho One

3/2 chest zip Psycho Freak

3/2 back zip Psycho Freak


O’Neill Psycho for Women

o'neill womens psycho wetsuit models

5.5/4 chest-zip Psycho Tech Hooded

4/3 chest-zip Psycho Tech

4/3 back-zip Psycho One

3/2 back-zip Psycho One


O’Neill Psycho Surf Wetsuits for Youth

o'neill psycho youths wetsuit models

4/3 chest-zip Psycho One F.U.Z.E


Boots / Hoods / Gloves

o'neill boots, two hoods and two pairs of gloves

3/2 Split Toe Boots

5mm Psycho Tech Boots

7mm Psycho Tech Round Boots

1.5mm Psycho Hood

3mm Psycho Hood

1.5mm Psycho Tech Gloves

3mm Psycho Tech Gloves

5mm five-finger Psycho Tech Gloves

5mm lobster Psycho Tech Gloves



Best Surf Brands

Different Types of Surfboard Explained

Where To Store Your Valuables When Surfing?

Published by:

I created Nulltuul to share my experience, research and analysis with other surf enthusiasts out there. If I'm not surfing on my travels - I like to photograph waves, surfers, and the surf lifestyle in general.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top