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O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit

O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit 4.7 5 14
SKU: ONL4962
Eligible for FREE SHIPPING!

Availability: In stock

Regular Price: $459.95


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Filling the niche between cool and frigid, the O'Neill Psycho Tech 4/3 Hooded Wetsuit takes away cold water blues in a lightweight, high tech package. Keeping a nearly identical design as the previous season, the Hooded Psycho Tech was built for insane flexibility and enduring warmth. Including the most advanced heat-trapping elements, the Psycho Tech has external fluid seam welds, internal taping in critical areas and quick drying TechnoButter Air Firewall Smoothskin panels in the chest and back to block wind chill and soak up the sun's warmth.

TB3 (TechnoButter 3) neoprene incorporates O'Neill's exclusive feather-lite ENVY foam core, creating one of the lightest and most flexible wetsuit components to date. The hydrophobic TB3 is strategically placed in the shoulders and extremities giving you maximum maneuverability where you need it, while TechnoButter Firewall Neoprene cushions the thighs and waist. This tactical combination of materials and seams delivers both long term durability and a snug, comfortable fit.

Focusing on a pleasant and productive experience in coldwater conditions the Psycho Tech ensures you get all the features you need without any of the extra bells and whistles. Wrist and ankle seals, durable knee pads, heavy duty zippers are all part of the package along with a toasty warm two-layer F.U.Z.E chest zip that keeps water from entering at critical points and seams while retaining a relatively generous entry. Offering the best bang for your buck, the O'Neill Psycho Tech is simply a high quality, high-performance surfing wetsuit.


  • Thickness: 4/3mm
  • Neoprene: TB3 and TB-Air
  • Seams: Sealed/Taped
  • Zipper: Chest Zip
  • Hood: Attached
  • Model Year: 2019
  • Manufacturers Part Number: 4962

Product Features

  • TechnoButter 3 Neoprene
  • TechnoButter Air Firewall Neoprene
  • F.U.Z.E Chest Entry
  • Single Fluid Seam Weld
  • Attached Hood with Visor and Cinch Lock
  • Water Resistant Red Zone Zipper
  • Super Seal Wrist Cuffs
  • Krypto Knee Padz
  • Key Pocket with Loop
  • Plasma Ankle Seals
  • Strategic Seamless Paddle Zones


O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Amazing wetsuit with a few issues...Review by Kookmeister Kookmeister
First off let me say the service from Clean Line was excellent. Secondly, I have never had a wetsuit as flexible as the O’Neill Psycho Tech. It really is like butter. It is also very easy to get into and out of. There are a few downsides to this amazing flexibility. One: it is fragile, so keep your finger and toe nails trimmed and be extra careful putting it on and taking it off. Two: unfortunately I run on the cold side and this suit insulates more like a 3/2 than a 4/3. I’m thinking that’s why they came out with the 4/3+. Three: if you don’t have the hood up you will get thoroughly flushed anytime you go under. All that being said, I own another 4/3 (Body Glove) and 5/4 (Matuse) but I always find myself putting the O’Neill suit on because it is so amazingly comfortable and makes paddling so so easy. So if you always run cold opt for the 4/3+ and if you don’t want the dreaded flush either always wear the hood or, if you don’t need a hood, get the model without one.
(Posted on 12/24/2019) 2019-12-24
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Excellent seals on the ankles and wrists!Review by Sean Sean
I'm really happy with this suit! My previous one was a Ripcurl E-bomb. The material on this one is much more flexible in the lower legs and forearms, yet it somehow seals just as well. They're so good that when I flush it with fresh water at the end of a session, it all pools up at the ankles and doesn't drain out until I reach down and hold the ankles open. I don't find it any harder to get out of than any other chest zip. Just start with the left arm, and pull the left shoulder down and hook it over your elbow. Then pull the remaining fold over that same elbow and you're out.
(Posted on 10/18/2019) 2019-10-18
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit High performance but delicateReview by Eric Eric
I like this suit but I was distressed to find that it seemed to develop (small) tears within the first 2weeks of using it. I patched those up with wetsuit cement but the suit still has issues. From the onset it seemed to flush more easily than other suits I've owned if I fell in a specific way (towards the zipper opening on the front. I spoke w/ the shop and they encouraged me to really tighten down on the pull at the chest-zip. I've done that and the flushes are less frequent (good - they still occur infrequently) but the nylon cord looks super-frayed and I'm worried it's going to break. The hood is super-flexible which is good for mobility but it seems to "slide around" and I find myself adjusting it multiple times a surf. Yes, I've tightened the nylon cord around the opening as much as possible but it's still fairly mobile. In the past I've used Xcel, (3x) and RipCurl (3x) suits and they've each had their strengths and weaknesses. I've really liked Xcel for durability but O'Neil is superior for the flexibility. This may be a reflection of the move in the industry towards more flexible materials with less longevity. I think I'm becoming a fan of the RipCurl suits for the best balance of both worlds. My RipCurl wetsuits have all seemed to last quite a bit longer than this O'Neil suit is trending towards. Just my experience/$.02. Your mileage may vary.
(Posted on 8/30/2019) 2019-08-30
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit fast service, super friendly peopleReview by scratch scratch
Suit is ok.
i find it super hard to get in and out of it
im at the top of the XL range , 210 lbs and find that it pinches around the arm pits due to the seams running right in front between shoulders and pecs. feels like its tighter at top than bottom.
also it took two days to dry fully in my house!!!??
its very warm, and looks great.
maybe i need to get used to it
its not as comfy as my old exel, but looks better built.
(Posted on 4/10/2019) 2019-04-10
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Superb Review by Craig Craig
Been wearing O'Neills for 15 years. I surf central CA so wind and cold water are the norm. This model works the best in those conditions. Very comfortable. Tricky to get off at first but once you get the hang of it, the warmth is worth the hassle.
(Posted on 4/2/2019) 2019-04-02
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Simply the best.Review by Gerry Gerry
It’s warm. It’s light. It’s easy to paddle in. And it drys quickly. Who can ask for more?
(Posted on 2/5/2019) 2019-02-05
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Warm and flexibleReview by Peter Peter
As I get older, it's harder to stay warm. This suit helps me keep the warmth in, yet is flexible enough to wear everyday Thanks Cleanline.
(Posted on 12/18/2018) 2018-12-18
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Stoked!Review by Kawika Kawika
First off, great service from Joe and the crew at Cleanline! Got me all set up with the correct size, best suit, etc. This suit is amazing! Ultra flexible/comfortable, very light, super warm, no chafing, and a great fit. Very easy to get in/out of considering it's a front zip, no need to dislocate your shoulders before peeling it off! I've used it about 6-8 times now and no signs of unraveling seams or weakening glue welds. I've had Xcel and Patagonia suits and the fit, comfort and quality of this O'Neill far exceeds theirs at a similar price point. You won't regret getting one!

(Posted on 10/30/2018) 2018-10-30
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Dope Wetsuit! TechnoButter out of control hot!Review by tylerg83 tylerg83
Everyone is jealous of me in the water that I bought this brand new O'neill suit. Best suit on the market. TechnoButter is exactly that, butter smooth.
(Posted on 10/16/2018) 2018-10-16
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit A Grade all around!Review by Watty Watty
A wonderful shopping experience - very very easy online with my size in stock. This is a top notch suit that fits like a glove and feels like a 3/2 - amazing technology and cut. Thanks Cleanline!!
(Posted on 6/18/2018) 2018-06-18
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Wetsuit or alien artifact?Review by jburn jburn
This wetsuit is an amazing piece of technology -- warm, flexible, light, fast drying. Best wetsuit I've ever owned. It might just be from another world; it's certainly in a class of it's own.
(Posted on 5/29/2018) 2018-05-29
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit EXCELLENTReview by JimiRincon JimiRincon
Super warm and stretchy, really enjoying it. Alsi easy on/off for chest zip with hood. Have to see how it wears but it seems well made, I always rinse suit and they all tend to last at least 2 seasons.
(Posted on 1/29/2018) 2018-01-29
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Futuristic performanceReview by Ned Ned
By some stretch of technology, this suit has all the warmth of a 4/3 but feels as light and flexible as a 2mm suit. Really. It's in a class of its own. Or to put it in WSL terms, it's a John John Florence and the competition is a bunch of Brett Simpsons.

I owe a huge thanks to the folks at Cleanline who turned me on to the Psycho Tech (I've been an Xcel guy for the past 10 years). At any rate, they walked me through the pros and cons of a handful of 2017's wetsuits, and answered all of my questions (of which I had ton). And now, I'm toasty from Santa Cruz to B.C.
(Posted on 11/7/2017) 2017-11-07
O'Neill Psycho Tech 4/3 Hooded Chest Zip Wetsuit Amazing customer service, best suit out thereReview by Pat Pat
The guys at cleanline are hands down the most friendly, knowledgeable, and surf stoked dudes out there. Customer service is incredible. Suit arrived perfect, with a handwritten note and some extra goodies in the box. Thanks cleanline, you guys are awesome!
(Posted on 9/14/2017) 2017-09-14

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Size Chart

O’Neill Men’s Wetsuits — Size Chart

The staff at Cleanline Surf specialize in sizing O'Neill Wetsuits. If you have never tried an O'Neill suit before, we strongly urge you to call us for expert advice on sizing. We do have a size chart available below, but please take it with a grain of salt. For the perfect fit the first time please call and speak with one of our wetsuit experts.

XS5′7″-5′9″125-140 lbs36.5-37.5″28.5-29.5″
S5′8″-5′10″135-155 lbs37.5-39″29.5-31″
ST6′0″-6′2″145-165 lbs37.5-39″29.5-31″
MS5′6.5″-5′8.5″145-165 lbs39-41″31-33″
M5′9″-5′11″155-170 lbs39-41″31-33″
MT6′1″-6′3″160-180 lbs39-41″31-33″
LS5′7.5″-5′9.5″160-180 lbs41-43.5″33-35″
L5′10″-6′0″170-190 lbs41-43.5″33-35″
LT6′2″-6′4″180-200 lbs41-43.5″33-35″
XLS5′8.5′-5′10.5″180-200 lbs43.5-46″35-37″
XL5′11″-6′1″190-210 lbs43.5-46″35-37″
XLT6′3″-6′5″200-220 lbs43.5-46″35-37″
2XLS5′9.5″-5′11.5″200-220 lbs46-48.5″37-39″
2XL6′0″-6′2″210-230 lbs46-48.5″37-39″
3XL6′0″-6′3″230-250 lbs48.5-51″39-44″
4XL6′1″-6′4″250-270 lbs51-53.5″44-48″

Full O’Neill Wetsuit Sizing Chart



If the product is found to be defective under normal use and proper care, O'Neill will repair or replace the product at our sole discretion. The decision to replace or repair a product is made by the O'Neill Warranty Department after receipt of the defective product. At no time does the O'Neill offer refunds. Defective product should be returned clean and dry, postage prepaid. Please include a note with product description, product defects, requested action, return address (be sure to include postal code, especially for Canadian addresses), daytime phone number with area code, customers name and a copy of the purchase receipt sent to the address below.

Suits without a copy of the purchase receipt will NOT BE COVERED UNDER WARRANTY.


  • Products classified as seconds
  • Fading from sunlight
  • Alterations
  • Materials over 1 year (from date of original purchase), or 90 days for accessories
  • Repairs or alterations done by anyone other than O'Neill or an O'Neill authorized repair facility
  • Warranty request without original receipt


Flat-Stitched Products, Glued and Blindstitched Products, and Fluid Seam Weld Products

  • Limited 1-year warranty (from date of original purchase) on workmanship and materials.

Neoprene Dry Suits

  • Limited 1-year warranty (from date of original purchase) on workman ship and materials (waterproof zipper excluded)


  • Limited 90-day (from date of original purchase) warranty on workmanship and materials


For repairs received from the dealer or end user, O'Neill offers:

  • 10 Business Day Turnaround for warranty Stitched Suits
  • 10 Business Day Turnaround for warranty Glued Suits
  • 20 Business Day Turnaround for warranty Fluid Seam Welded Suits
  • 30 Business Day Turnaround for all Non-Warranty Repairs

Repairs are to be returned clean and dry, postage paid. Please include the name and a daytime phone number with area code, return address, product description, and requested action.

Send Repairs To:

O'Neill U.S. Warranty Repair
1022 Bay Marina Drive, Suite 140B
National City, CA 91950
Tel: 1-800-331-1637


We understand that when purchasing gifts, returns and exchanges can be necessary, which is why for the Holidays we are extending our Return Policy so that anything purchased as a gift this Holiday Season is eligible to be returned by the end of January. If you are not 100% satisfied with your product you may return it for a full refund, or exchange by the end of the month of January 2020.

Please make sure your wetsuit fits before taking it in the water. We are not able to take returns or exchanges on used wetsuits.

Please reference our full Return Policy.

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