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O'Neill Epic 4/3 Back Zip Wetsuit

O'Neill Epic 4/3 Back Zip Wetsuit 4.6 5 17
SKU: ONL4212
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Cleanline Staff Member Matt Cleanline Staff

Matt Says:

"O'Neill's Epic 4/3 Back Zip is affordable and packed full of high end materials and features. O'Neill does not skimp even on their entry level wetsuits and it is apparent in the Epic. Recently upgraded to 100% Ultraflex Neoprene, it's pretty hard to tell the difference between this stuff and the neoprene other brands are using in their high end suits. I like the ease of entry provided by O'Neill's back zip entry. It's the way to go if you have broad shoulders or just want something that isn't a struggle to take on and off. The Epic 4/3 wetsuit will keep you warm down to the mid/low 50's and up to the low 60's depending on your preference. Definitely a great wetsuit and a suit to consider!"


The O'Neill Epic 4/3 Wetsuit is a killer entry level suit with many of the features of a high-end O'Neill wetsuit including 100% Ultraflex neoprene, double seal neck closure, LSD (lumbar seamless design) and a re-engineered covert blackout zip. Clean graphics and sharp style lines make the Epic one of the industries best entry-level fullsuits.

*Due to variables in vendor production, logo colors and details may vary.


  • Thickness: 4/3mm
  • Neoprene: UltraFlex
  • Seams: Glued & Blindstitched
  • Zipper: Back Zip
  • Hood: None
  • Model Year: 2019/2020
  • Manufacturers Part Number: 4212

Product Features

  • Smooth Skin FluidFlex Firewall on chest and back to block wind and keep you warm
  • UltraFlex DS neoprene
  • Krypto knee padz for longevity
  • Glued and blindstitched seams for flexibilty
  • Critically taped for durability
  • Double super seal collar for buttery comfort
  • F.U.Z.E. Closure (Front Upper Zip Entry) uses a free floating zipper panel and anti flush barrier
  • Chest zip: right to left
  • Updated velcro closure
  • External key pocket with loop on lower right leg
  • Strategic seamless paddle zones
  • LSD: Lumbar Seamless Design
  • Aqua Alpha: eco friendly solvent glue that is water based and free of VOC's
  • Limestone-based neoprene sourced from Japan


O'Neill Epic 4/3 Back Zip Wetsuit Great wetsuit and even greater customer serviceReview by Mark Mark
Bought this for my brother and fit him perfectly. He lives in California and I was worried that this suit wouldn't be able to handle to cooler winter temps but it did great. I also want to shout out the customer service as they were very helpful and even threw in wax, starburst, and a handwritten note. Very classy touch. Thanks guys!
(Posted on 12/27/2019) 2019-12-27
O'Neill has always been my go-to brand for wetsuits and surf gear since day 1 of surfing. After about 8-10 years of use, due to wear and tear, it comes time to replace one of their suits. Found the exact same Epic 4:3 suit on Cleanline's site after some internet searching for it. Cleanline had the best price and shipping so I purchased it. NOT disappointed, as the suit arrived quickly and in perfect condition. As others have said, the personal touches in the packaging like stickers, a hand-written note, candies, and surf wax were just proof that purchasing from a real shop is the right thing to do if it's supporting a local community (even if it's not mine in SoCal, their customer service makes me want to visit their shop if ever in Oregon). Thanks so much Cleanline crew!
(Posted on 12/26/2019) 2019-12-26
O'Neill Epic 4/3 Back Zip Wetsuit Great Product, great service!Review by Damodar Damodar
Great product. I didn't talk to any customer care service person, so I would say I had no issues with any with the product nor the service!
Awesome site, great sales and selection, and they gave me a stickers, a handwritten thank you note, and candy with the shipment!
(Posted on 5/13/2019) 2019-05-13
O'Neill Epic 4/3 Back Zip Wetsuit Excellent customer service, excellent product Review by Paul Paul
We ordered this wetsuit as a Christmas present, the customer service is fantastic and the wet suit is perfect, exactly what we wanted. We will definitely order from Cleanline again.
(Posted on 1/22/2019) 2019-01-22
O'Neill Epic 4/3 Back Zip Wetsuit Great entry level suitReview by mpc mpc
Last time I had a 4/3 was 10 years ago and it was a high end O’Neill. I had such a miserable time getting out of it!
Not so with my new Epic. Warm, comfy, and easy to get out of. We’ll see how it wears. At that price point I won’t mind getting a new one each season.
(Posted on 5/29/2018) 2018-05-29
O'Neill Epic 4/3 Back Zip Wetsuit We like O'Neill wetsuits!Review by Haak smash! Haak smash!
I bought this 4.3 mil for my 17 year old son to use in our whitewater park & ocean here in Oregon. He SUP's, surf's & boogie boards year round. Cleanline recommended O'Neill brand as my son is very muscular with broad shoulders. It fits his athletic build well!
We plan to order more products from Cleanline Surf as they delivered early, threw in a bunch of goodies, are very helpful on the phone, great prices, local & have a huge selection! We wear wetsuits year round here & I have bought wetsuits for over 20 years. This is my favorite shop yet!!
I recommended Cleanline Surf to my youth paddle team (On FB- Bend Youth Brigade Paddle Team) & to my son's SUP sponsor shop Stand On Liquid! We will be back!!
(Posted on 4/24/2017) 2017-04-24
O'Neill Epic 4/3 Back Zip Wetsuit Cleanline - 5 Stars. O'Neill Epic....?Review by Chi Chi Chi Chi
The O'Neill Epic is a mid-level wet suit, which is why it has a mid-level price. I will say that I did receive a fairly good deal with the groovy folks at Cleanline. And speaking of groovy, their customer service is great! Expeditious, to say the least. Josh even tossed a couple of cool & bitchin' stickers and a handful of Starbursts into the box before it was sent out. Always appreciate the little things like that.
The wet suit kept me warm enough today in Southern California winter water temps, which is fine by me. It was my first time wearing it, but so far, so good. The back zipper does let a bit of water through, though mostly it's tight. My arms are longer than most folks, so the sleeves seemed a bit short, though they may stretch some in time. Because my chest is large, I have had problems with chaffing in other wet suits, but after three hours of paddling in slop conditions, my shoulder-chest area is A-Okay. If I lived someplace where the water is cold year round, I would invest in a better suit, but for the few months a year that I will need the Epic, it should work fine.
(Posted on 1/29/2017) 2017-01-29
O'Neill Epic 4/3 Back Zip Wetsuit Very good shopping experience, surprisingly poor product experienceReview by Joel Joel
Cleanline Surf has a great site and they did a good job shipping this suit quickly. Wetsuit arrived in 5 days with a hand written note, stickers and some candy (nice touch).

I only wish the wetsuit's performance in the water resembled my initial shopping experience. This suit might work for kite-surfing or paddle-boarding but not surfing in cold water (mid/low 50s as per the product description). I'm 5'10", 178 lbs and ordered a size L. Overall comfortable fit with nice neoprene material but the seam sealing is really terrible - worst I have ever encountered in more than 15 years of wearing wetsuits. There were leaks all throughout the suit on the first wear. This creates a problem not only in keeping my body warm but my hands and feet became cold as my booties and gloves kept filling with cold water introduced through the suit. I wish the produce description did not say "watertight seams". This is really not true and served only to mislead my purchase decision.

I will try to return this suit but as it has been worn once I will be at the mercy of customer service. I hope I can get a suit with actual watertight seams without this one being written off to a totally misguided $166 purchase.

Initial Cleanlines online shopping experience = 5 stars ; O'neill Epic 4/3 Back Zip = 2 stars (for neoprene material and fit) ; Customer service (via Cleanlines or O'neill) = fingers crossed (I will attempt to update this rating if I am able)
(Posted on 12/22/2016) 2016-12-22
O'Neill Epic 4/3 Back Zip Wetsuit Ok suit, good priceReview by Mike Mike
The price is right if you are surfing infrequently. Back zip lets a lot more water in than other designs. Otherwise suit is well made. Stitches and seams are well sealed. Good flexibility and fit.
(Posted on 12/19/2016) 2016-12-19
O'Neill Epic 4/3 Back Zip Wetsuit Good suit.Review by Will Huang Will Huang
Good suit for a good price. Got the blue epic M and I'm around 5'11" and 145 lbs and it fit well. Friendly service with a handwritten note and sex wax given for free!
(Posted on 10/17/2016) 2016-10-17
O'Neill Epic 4/3 Back Zip Wetsuit Perfect and ComfortableReview by Tom G Tom G
It's always a challenge to be comfortable and warm but this suit does both. Great for wakeboarding and wake surfing as you can maneuver with ease.
(Posted on 6/9/2016) 2016-06-09
O'Neill Epic 4/3 Back Zip Wetsuit Excellent Product and Even better Seller!Review by Luke Luke
I received my Large Short O'Neill Epic 4/3 back zip wet suit even earlier than expected and with a hand written note thanking me for my purchase. I am incredibly pleased with cleanlinesurf and will recommend highly for anyone to purchase products from them. I never heard of them before but they were the cheapest place to buy the wet suit I wanted and am happy I did find them!
I am 5'9" and 170lbs, athletic build and the wetsuit fits perfectly. I use it for wakeboarding and wakesurfing in MN in 50+ degree water. Works excellent!
(Posted on 6/1/2016) 2016-06-01
O'Neill Epic 4/3 Back Zip Wetsuit Great Service...Perfect suitReview by Richard Richard
Traded up for the Epic suit for sure. Easy to get on and off. Good thing for a surfer that's pushing 65. Used it in the ocean in the Northwest in April no problem. Nice and warm.
This is the third suit my wife and I have purchased from these folks. Excellent!!! Thank you..
(Posted on 5/11/2016) 2016-05-11
O'Neill Epic 4/3 Back Zip Wetsuit Nice suit - great serviceReview by Schultzy Schultzy
Bought for 15 yr old for use in Northwest (mid 50's water). Body boarded for hours in April and remained toasty. 5'9" 135 skinny, so I was a bit nervous. Growing like a weed so I reluctantly went against the advice of Cleanline and bumped him up to a medium in hopes of getting at least a season out of it. Good news is that even with a little 'slop' where he did not fill in the suit completely he stayed warm and loved it. Happy dad. **Cleanline staff is awesome and most helpful. Quick shipping as well.
(Posted on 4/27/2016) 2016-04-27
O'Neill Epic 4/3 Back Zip Wetsuit O'Neill EpicReview by Caesar Caesar
Simply put is "Epic". Great price and quality. Fits like a glove.
(Posted on 4/26/2016) 2016-04-26
O'Neill Epic 4/3 Back Zip Wetsuit Wonderful experienceReview by Elise Elise
I am very happy with my purchase with Cleanline surf. The epic 4/3 is just gorgeous not to mention incredibly warm and a durable quality that will last. It was a Christmas gift for my husband and the package arrived sooner than expected! They were also so personable with a thank you note and a bar of wax! I can't wait to come to this site again and again knowing that I will always get incredible service and a great price for all of our surfing needs.
(Posted on 1/4/2016) 2016-01-04
O'Neill Epic 4/3 Back Zip Wetsuit Epic quality at an affordable priceReview by Jack Jack
I couldn't be any more satisfied with my Epic 4/3. I've used O'Neill suits for decades and rely on their durability and quality. The Epic is no different and works great. The whole suit is UltraFlex DS now so it fits perfect and is super stretchy. This suit gets used everyday too, not just once a blue moon. It's working great in chilly Central Cal and the price was unbeatable.

The whole shopping experience was a pleasure at Cleanline Surf. They happily answered questions about the suit when I called. Awesome site, great sales and selection, and they even gave me a bar of wax, stickers, a handwritten thank you note, and candy with the shipment! Are you kidding me? Who does that nowadays? I'm a customer for life now. :-)
(Posted on 12/21/2015) 2015-12-21

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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


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.

Please reference our full Return Policy.

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