O'Neill Youth Mutant 5/4/3 Hooded Wetsuit - 2015

O'Neill Youth Mutant 5/4/3 Hooded Wetsuit - 2015 4.75 5 4
SKU: ONL4198
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Availability: Out of stock

Regular Price: $269.95



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The O'Neill Youth Mutant 5/4/3 Wetsuit is the most versatile youth wetsuit in the O'Neill Wetsuit line. The Mutant allows for use with a standard chest zip neck piece or an interchangeable 2mm hood for colder days. Perfect for the grom that wants to surf in different conditions but can only afford one suit.

Built with an easy chest zip entry, firewall insulation and fluid seam welds, the Mutant will keep the warmth in and the water out. A lightweight combination of Ultraflex DS and insulating UltraFlex Firewall makes for improved comfort and flexibility. Two suits in one, now go get some!


  • Thickness: 5/4/3mm
  • Neoprene: Ultraflex DS Neoprene
  • Seams: Single Fluid Seam Weld
  • Zipper: Chest Zip/Modular Closure
  • Hood: Fully Attachable/Detachable Zip in Hood
  • Model Year: 2015/2016
  • Manufacturers Part Number: 4198

Product Features

  • Modular Closure System: Comes with both a regular neck closure and can be interchanged with the included hood depending on the conditions.
  • UltraFlex DS Neoprene: 100% Ultra Stretch, Super gooey for superior feel and flexibility.
  • UltraFlex Firewall: Super soft and flexible water wicking insulation that keeps you warm and dry.
  • 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 Ankle Seals: Helps prevent flushing through the 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 leg inseam, this key pocket is 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.


O'Neill Youth Mutant 5/4/3 Hooded Wetsuit - 2015 Great youth wetsuit for NWReview by Dave Dave
This suit kept my son warm for a couple of hours in 50 degree water. Fit matched sizing chart. Well made. Reasonable price. Excellent customer service from Cleanline! Thanks!!
(Posted on 7/17/2018) 2018-07-17
O'Neill Youth Mutant 5/4/3 Hooded Wetsuit - 2015 Cleanline. None betterReview by Kyle Kyle
Bought for son to replace a cheap back zip but he hasn't used it yet. Great suit but had damaged hood* and I'm not so sure about the zipperless entry. I saw panic in his eyes for a few seconds the first time he tried it on.
I ordered this suit without giving any thought to the potential effects of buying an older version(2016), other than price. When the new suit had some minor but important damage, especially as a winter suit I got in touch with Cleanline, AFTER THE STATED RETURN, etc time line! I now wish I spent the small amount i saved. If Cleanline hadn't been so great, getting in touch with O'Neill who then made me one with the 2016 specs! Now that is service above & beyond. Everyone I dealt with was great. At first they explained the situation, and that there just wasn't a hood that would fit which was understandable, while also giving me some options & saying they'd work with me. Cleanline shocked me a day or 2 later when they emailed to tell me they'd called O'Neill as I described above. My local shops look cool, fun to browse, but I know they'd never go 1/2 as far. Sadly.
(Posted on 4/4/2018) 2018-04-04
O'Neill Youth Mutant 5/4/3 Hooded Wetsuit - 2015 High quality wetsuit, excellent service from Cleanline SurfReview by Jb Jb
I had initially bought the size 10 for my son (4’8”, 75#) and it was too small (might have worked for a short time but not long). I returned it for the size 12 which works great currently and will hopefully have more life as he grows. Cleanline was AWESOME with the exchange! The wetsuit itself is what you would expect from O’neill. High quality. Hood is removable. We surfed in 38 degree water last week and he was warm for over an hour until hands got cold. I would absolutely recommend this suit!
(Posted on 1/24/2018) 2018-01-24
O'Neill Youth Mutant 5/4/3 Hooded Wetsuit - 2015 Great Kid's Wetsuit. Great customer service!Review by Luca's Papa Luca's Papa
Arrived promptly. Fit as sizing charts predicted. Good quality. Nice price. Nice personal touch with the handwritten note. I remember that from an order about 5 years ago. Thanks!! Looking forward to some winter surfing with my daughter!
(Posted on 1/2/2018) 2018-01-02

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Size Chart

At Cleanline Surf we specialize in sizing O’Neill Youth Wetsuits. We do have the manufacturers size chart available below but please take it with a grain of salt. If you have any doubt about what size you need we strongly urge you to call us and speak with one of our wetsuit experts. Getting the right size is extremely important and in the end it will save you both time and money by avoiding the need for a return.

Toddler SizesHeightWeightChestWaist
12′10.5″-3′2.5″25-30 lbs19-21″18-20″
23′2.5″-3′6.5″30-35 lbs20-22″19-21″
33′6.5″-3′10.5″35-40 lbs21-23″20-22″
Grom SizesHeightWeightChestWaist
43′10.5″-4′1.5″40-55 lbs23-25″20-22″
64′1.5″-4′4.5″50-65 lbs24.5-26.5″21.5-23.5″
84′4.5″-4′7.5″60-75 lbs26-28″23-25″
104′7″-4′10″75-90 lbs28-30″23-25″
124′10″-5′1″90-105 lbs29-31″25-27″
145′1″-5′4″105-120 lbs31-33″27-29″
165′4″-5′7″120-135 lbs33-35″28-30″

Full O’Neill Wetsuit Size 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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