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O'Neill Mutant 4/3 Wetsuit with Hood

O'Neill Mutant 4/3 Wetsuit with Hood 5 5 5
SKU: ONL4761
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Availability: In stock


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The O'Neill Mutant 4/3 Wetsuit converts for performance in an optimal range of conditions by allowing you to easily go from a full hooded wetsuit to a regular chest zip suit with just a few zips. When days are cold and gloomy the Mutant keeps you cozy in a cocoon of cushy neoprene. When the water temperatures creep up and the sun comes out, zip, toss the hood, then zip zip and enjoy. Simple, functional and great for year-round surfing.

Flexible and warm, the Mutant features Watertight Stitchless Technology and insulates your core with lightweight, toasty TechnoButter Firewall which absorbs the sunshine and blocks the wind chill. Multifaceted to suit an array of conditions and built with durable, high quality materials, the Mutant Wetsuit is a killer suit that has earned a hefty following of fans for good reason.


  • Thickness: 4/3mm
  • Neoprene: Ultraflex DS Neoprene
  • Seams: Single Fluid Seam Weld
  • Zipper: Chest Zip/Modular Closure
  • Hood: Fully Attachable/Detachable Zip in Hood
  • Model Year: 2018/2019
  • Manufacturers Part Number: 4761

Product Features

  • UltraFlex DS Neoprene: 100% Ultra Stretch, Super gooey for superior feel and flexibility.
  • TechnoButter Firewall: TechnoButter Neoprene with a flexible water wicking insulation that helps keep you warm and dry.
  • Modular Closure System: Comes with both a regular neck closure and can be interchanged with the included hood depending on the conditions.
  • Dual Cinch System: Barrel cinches on neck and hood closures that seals out water and minimizes flushing.
  • Single Fluid Seam Weld: Watertight Stitchless Technology that keeps water from entering at all seams and critical points.
  • Single Superseal Neck: A fully adjustable closure featuring a 360 smooth skin interior, chafe-free unfinished edge, and minimal bulk design.
  • Plasma Wrist and Ankle Seals: Helps prevent flushing through the wrists and ankles and keeps a secure fit
  • Krypto Knee Padz: Abrasion resistant, high stretch neoprene panel with ergonomic shaping designed to extend the life of the wetsuit and protect the knee while punching through waves.
  • External Key Pocket: Located along the lower side seam of the knee pad, this key pocket and fastening loop are easy to access and completely secure.
  • Contortionist Seamless Shoulders: Seamless shoulder panels for unrestricted mobility and ultimate stretch.
  • LSD (Lumbar Seamless Design): We all know that even the best surfers spend significant amounts of time sitting on their boards. By using a single panel in the rear area of the wetsuit, water entry is minimized and stretch is maximized.
  • Limited 1-year warranty (from date of original purchase) on workmanship and materials.


O'Neill Mutant 4/3 Wetsuit with Hood Wait, is this a dry suit?! Review by Joe Joe
Yes it’s that good. I picked one up for winter after hearing all about them. They live up to the hype. The seals are fantastic and keep you sealed and warm. Surfed in low 50’s today and it had be toasty all session. Go get yourself one.
(Posted on 10/27/2018) 2018-10-27
O'Neill Mutant 4/3 Wetsuit with Hood MutantReview by Eddie Eddie
This is the second O'Neil mutant wetsuit that I've owned. I love the ability to interchange the hood. The previous mutant wetsuit that I had was wearing out so it was time for a new one and once again this didn't disappoint. Just surfed at short sands and the water temp was probably mid 50's. My body was toasty warm in the suit.
(Posted on 7/24/2018) 2018-07-24
O'Neill Mutant 4/3 Wetsuit with Hood Stoked Review by Brian Brian
A friend recommended this suit and I’m stoked. It’s been one of the coldest winters in a while and I’ve been warm every session.
(Posted on 1/30/2018) 2018-01-30
O'Neill Mutant 4/3 Wetsuit with Hood Awesome SuitReview by todd todd
I would write a full review but the first review said what I was thinking.
(Posted on 12/18/2017) 2017-12-18
O'Neill Mutant 4/3 Wetsuit with Hood Best wetsuit I've ever wornReview by Gerry Gerry
The Mutant is a great wetsuit for thre simple reasons:

1. It's very warm.
2. It's very flexible.
3. It has the versatility of being hooded or un-hooded.

The secret behind the warmth is all of the seals work exceptionally well. It's a simple equation, when you take a bath how cold you get is proportional to how much water gets in at your wrists, ankles, and neck. The Mutant is almost a dry suit. I am particularly impressed with how good the neck seal is.

A lot of companies brag about how flexible their particular neoprene is. In my opinion O'Neil has them beat. I can move freely in my Mutant and that translates to being able to paddle.

I like being able to use the suit with or out the hood. Typically, I find a hooded suit warmer because the hood reduces the flush factor and keeps your head warm. But I always feel a little confined I with the hood on. Now I save the hood for really cold days and wear a beanie on in between days. The neck seal on the Mutant does a great job of keeping the water out.
(Posted on 12/28/2016) 2016-12-28

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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″
M5′9″-5′11″155-170 lbs39-41″31-33″
MS5′6.5″-5′8.5″145-165 lbs39-41″31-33″
MT6′1″-6′3″160-180 lbs39-41″31-33″
L5′10″-6′0″170-190 lbs41-43.5″33-35″
LS5′7.5″-5′9.5″160-180 lbs41-43.5″33-35″
LT6′2″-6′4″180-200 lbs41-43.5″33-35″
XL5′11′-6′1″190-210 lbs43.5-46″35-37″
XLS5′8.5″-5′10.5″180-200 lbs43.5-46″35-37″
XLT6′3″-6′5″200-220 lbs43.5-46″35-37″
2XL6′0″-6′2″210-230 lbs46-48.5″37-39″
2XLS5′9.5″-5′11.5″200-220 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


Returns are easy! We understand that in some situations returns or exchanges may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, or exchange within 30 days of receiving your order. Items must be in new condition with original tags and packaging.

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

Click here for our full Return Policy

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