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O'Neill Men's Reactor 3/2mm Back Zip Full Wetsuit

4.6 844 ratings

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Price:

$149.99 Free Return on some sizes and colors

Color: Black

Size Chart

US Full wetsuit

Brand Size	Height (in)	Chest (in)
XS	69	36.5 - 37.5
S	70	37.5 - 39
MS	68.5	39 - 41
M	71	39 - 41
MT	71	39 - 41
LS	69.5	40 - 44
L	72	40 - 44
LT	72	40 - 44
XLS	70.5	42.5 - 47
XL	73	42.5 - 47
XLT	73	42.5 - 47
2XLS	71	45 - 50
2XL	74	45 - 50
2XLT	74	45 - 50
3XLS	71	47.5 - 52.5
3XL	74	47.5 - 52.5
3XLT	74	47.5 - 52.5
4XLS	71	50 - 55.5
4XL	74	50 - 55.5
4XLT	74	50 - 55.5
5XLS	71	52 - 58
5XL	74	52 - 58
5XLT	74	52 - 58
6XL	74	54 - 60
6XLT	74	54 - 60

Product details

Fabric type

Neoprene

About this item

Should fit snug, but not too tight

3/2mm FluidFlex (tm)/Fluid Foam

Single Superseal Neck

Flatloc Construction

Back Zipper

Krypto Knee Padz.Ykk back zip system.Hidden key pocket

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Product details

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 27 x 18 x 4 inches; 1 Pounds
Item model number ‏ : ‎ 3798-Black-Large
Department ‏ : ‎ mens
Date First Available ‏ : ‎ January 5, 2011
Manufacturer ‏ : ‎ O'Neill Wetsuits
ASIN ‏ : ‎ B004I44QL8

Best Sellers Rank: #596,024 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
- #988 in Wetsuits

Customer Reviews:
4.6 844 ratings

Product Description

The newly upgraded REACTOR-2 is engineered for performance in a value driven package. A perfect combination of stretch and durability. Fresh colors and graphics with style that's built to last.

Customer reviews

4.6 out of 5

844 global ratings

How customer reviews and ratings work

Customers say

Customers like the fit, value, and comfort of the sport wetsuit. They mention that it fits great, is good value for the money, and is comfortable in the water. Customers are also happy with quality, warmth, and performance. However, some customers have reported issues with the zipper and water resistance.

AI-generated from the text of customer reviews

256 customers mention213 positive43 negative

Customers like the fit of the sport wetsuit. They mention it's easy to put on and fits great. Some say the sizing was accurate.

"...It was form fitting, kept me warm, and it was very comfortable on my body frame...." Read more

"For the price this is an amazing wet suit. The fit is great all around and though the wrists and ankles are snug they are not too tight for me...." Read more

"...I took my own measurements and ordered the recommended size, and it fits perfectly...." Read more

"I recently purchased this suit and i do like the way it fits, how i can zip it up myself, and my neckline is comfortable with the strap...." Read more

237 customers mention200 positive37 negative

Customers like the quality of the wetsuit. They say it's made of incredible material and holds up well. Some customers also mention that it'll last for many years.

"...The construction of this suit is solid. I used it no fewer than a dozen times and had no issues with tearing/damaging the material...." Read more

"For the price this is an amazing wet suit. The fit is great all around and though the wrists and ankles are snug they are not too tight for me...." Read more

"...Excellent product that I expect to last for many years." Read more

"...it for sailing for one season it has held up strongly with no rips or tears yet. Used it well into fall and helps keep me warm in the cooler waters...." Read more

113 customers mention113 positive0 negative

Customers appreciate the value of the sports wetsuit. They mention it's comfortable, able to move around, and excellent for the price.

"...Given the quality, I felt it was a very fair price...." Read more

"I spent a long time looking for a good wetsuit at an affordable price and from a reputable company so I settled on the O'Neill Reactor 3/2...." Read more

"...Great suit for the price." Read more

"...Much more comfortable and malleable for the price its excellent. Will update this review once I have spent a few hours in it this weekend." Read more

97 customers mention97 positive0 negative

Customers find the sport wetsuit comfortable in the water. They say it's snug without feeling restrictive. Some customers also mention that the arms and legs are tight, but not too tight. Overall, customers say the suit provides hours of comfortable surfing.

"...It was form fitting, kept me warm, and it was very comfortable on my body frame...." Read more

"...The fit is great all around and though the wrists and ankles are snug they are not too tight for me...." Read more

"...It's snug in the wrists & ankles just like I wanted, and not too tight in the neck...." Read more

"...the way it fits, how i can zip it up myself, and my neckline is comfortable with the strap. I purchased the Large Tall and I'm 6'1 about 195lbs...." Read more

95 customers mention83 positive12 negative

Customers like the warmth of the wetsuit. For example, they say it's well-made, keeps them warm, and is good for moderately cold temperatures. The coldwater hood makes a huge difference in bottling in warmth. The insulating factor is awesome and the suit feels refreshing.

"...It was form fitting, kept me warm, and it was very comfortable on my body frame...." Read more

"...Just a plus.The insulating factor is awesome! Don't even feel the cold water...." Read more

"...While skiing, it takes the cold out of the experience, and protects & cushions my body from impact shock if/when I fall...." Read more

"...I was a little chilly, but not cold, and not shivering...." Read more

60 customers mention60 positive0 negative

Customers are satisfied with the performance of the wetsuit. They mention that it holds up well, performs to all expectations, and works great for surfing, boogie boarding, and east coasts surfer. The quality is great and the zipper layers and neck closure work well.

"...Besides working well for its purpose, I looked like a pro without breaking the bank...." Read more

"...This one does the job perfectly. I skied in it a lot, and even on hot and sunny days I did not get too hot while driving the boat in it...." Read more

"...It worked perfectly, keeping the cold water off of my skin and keeping me warm. I am 5'9" 160 and I picked up the large...." Read more

"...The suit is still functional, since the tear doesn't go all the way to the skin, but I won't expect it to last more than one season, if that...." Read more

31 customers mention9 positive22 negative

Customers are dissatisfied with the zipper. They mention that it tends to come unzipped, breaks, and is only connected on one side. Some say that the suit is too tight and the zipper gets loose.

"...I'm giving it poor rating because it did not last. The zipper came off the wetsuit making it useless...." Read more

"...The zipper on the back comes undone pretty easily, so make sure you strap the neck tightly around it. Great mobility...." Read more

"...to doff and don (as easy as wetsuits ever are), and I had no issues with seams or zippers. Excellent product that I expect to last for many years." Read more

"...also point out, because others have mentioned it, the zipper itself tends to come unzipped when you wipe out in a wave of any decent strength...." Read more

26 customers mention5 positive21 negative

Customers are dissatisfied with the water resistance of the wetsuit. They mention that the seams leak and water comes through a bit. Some say that the neck fastener can come undone and water gets in from everywhere.

"...The seams are not welded so it will leak some water, as expected, in a suit designed at this price point...." Read more

"...about two months of wakeboarding with this wetsuit, water has been getting past the seal around the neck and pooling in the legs of the suit..." Read more

"...at least block water from coming in,,, on this suit the seams are just not up to par with a quality suit...." Read more

"...easy to get in and out ofNegatives:the seams DO leakneck fastener can come undonematerial is not very stretchy or soft..." Read more

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Tito

Excellent Performance & Value!

Reviewed in the United States on October 24, 2011

Size: X-LargeColor: BlackVerified Purchase

Outstanding suit and outstanding value! I bought this wetsuit for spending a week snorkeling in waters where temperatures ranged from 68F-73F. I don't get cold easily, but I knew that I would need something to ensure I wouldn't freeze. The construction of this suit is solid. I used it no fewer than a dozen times and had no issues with tearing/damaging the material. It was form fitting, kept me warm, and it was very comfortable on my body frame. Besides working well for its purpose, I looked like a pro without breaking the bank. It wasn't the cheapest on the market, but you can also spend a lot more. Given the quality, I felt it was a very fair price. For packing it in a suitcase and keeping its size to a minimum, I used a high quality vacuum packing bag (the kind that doesn't require a vacuum cleaner) and it packed down to the size of a pair of men's jeans. I also really liked that this particular item qualified for Amazon's free returns program. I was able to easily return one that didn't fit.

18 people found this helpful

Helpful

P. Kelley

Awesome Suit!

Reviewed in the United States on August 19, 2018

Size: X-LargeColor: BlackVerified Purchase

For the price this is an amazing wet suit. The fit is great all around and though the wrists and ankles are snug they are not too tight for me. (My ankles are large, wrists probably a medium for men). The suit was easy on and off.

The padded front is a major plus as diving sometimes brings contact with the bottom or rocks; it feels very protective on contact. Swam theough and underwater tunnel and had to do some bends - when I scraped the edges of rock the suit protected against abrasions. Just a plus.

The insulating factor is awesome! Don't even feel the cold water.

Also, another plus, when snorkeling it aids in floating making the trip less laborious.

For the price, recommed? ABSOLUTELY!!

2 people found this helpful

Helpful

Re Vue

Well made, durable, not too hot, not too cold--I like this wet suit a lot.

Reviewed in the United States on April 14, 2013

Verified Purchase

The biggest surprise was that the sizing chart was 100% accurate. I took my own measurements and ordered the recommended size, and it fits perfectly.

It's snug in the wrists & ankles just like I wanted, and not too tight in the neck. I'm shorter & heavier (5' 7", 190 lbs) than the typical water skier, and it was difficult to find a nice wet suit that fit me well. This one does the job perfectly. I skied in it a lot, and even on hot and sunny days I did not get too hot while driving the boat in it. While skiing, it takes the cold out of the experience, and protects & cushions my body from impact shock if/when I fall.

I like this a lot--it was perhaps my best purchase last year, based on the amount of satisfaction it's provided me. I recommend it, and would buy it again if something happened to this one.

2 people found this helpful

Helpful

Sevak

I recently purchased this suit and i do like the way it fits

Reviewed in the United States on August 7, 2017

Size: Large TallColor: BlackVerified Purchase

I recently purchased this suit and i do like the way it fits, how i can zip it up myself, and my neckline is comfortable with the strap. I purchased the Large Tall and I'm 6'1 about 195lbs. One thing i did not like about this suit in specific is that it reeks!! Anywhere i place this item it starts to smell like weed. I put it in my closet and my mother accused my of smoking in the house. I left it in my car trunk and people inside the car would make fun and accuse me of being a smoker, when that's not the case. I even began to have headaches due to the smell and had nowhere else to put it so i took it out of my car and hung it up somewhere in my backyard, 50 feet away from the closest window. I wish it didn't smell so bad, then i would rate it 5 stars. I'm sure this is NOT normal and I'm unsure why this is the case. Even after wearing it out a few times with hopes of the smell going away, it's still there and it's super strong. If Amazon does see this I hope they can reach out to me and replace this or even just take it back because I really cannot stand the odor any longer.

17 people found this helpful

Helpful

kevindsingleton

Great suit, great price

Reviewed in the United States on March 8, 2016

Size: X-LargeColor: BlackVerified Purchase

I used this wetsuit for some diving in Florida, just this past week. The water temps were around 73 degrees, and I wore a SSA skin under the wetsuit. For the conditions I faced, this was not enough wetsuit. I could have used another couple of millimeters of neoprene. I was a little chilly, but not cold, and not shivering. If you'll be diving in water a little warmer than 73 degrees, this will be fine, probably all the way up to about 85 degrees. The suit fit perfectly, and was easy to doff and don (as easy as wetsuits ever are), and I had no issues with seams or zippers. Excellent product that I expect to last for many years.

Helpful

Matt

Good fit for bigger guys

Reviewed in the United States on December 23, 2016

Size: 3X-LargeColor: BlackVerified Purchase

As a bigger guy it was tough finding a full wetsuit that fits. Well look no further, at 280lbs+ I am able to fit snugly into this suit and still have room to play with. After using it for sailing for one season it has held up strongly with no rips or tears yet. Used it well into fall and helps keep me warm in the cooler waters. Yes, it is a WETsuit so you do get wet, it's purpose is to trap water between the suit and you and warm up the water thus keeping you warm. Both my uncle and I own this suit and has held up well for him too so I highly recommend it if you're considering it. Will update review if anything comes up.

3 people found this helpful

Helpful

Steve Taylor

Great Entry Level Wetsuit

Reviewed in the United States on December 1, 2017

Size: LargeColor: Black/Red/BlackVerified Purchase

I spent a long time looking for a good wetsuit at an affordable price and from a reputable company so I settled on the O'Neill Reactor 3/2. The fabric is excellent and very stretchy and the stitching is flawless. The zippers is heavy duty and although I'm not particularly flexible I can zip it up with no problems. I needed a wetsuit for kayaking (specifically a surfski) so I purchased it one size up so I would have a little extra room for my shoulders for paddling and my backside for sitting. It worked perfectly, keeping the cold water off of my skin and keeping me warm. I am 5'9" 160 and I picked up the large. If I wanted one for swimming I think the medium would be perfect. The red version looks pretty cool.
Do your homework on wetsuits before buying. There is a reason this is one hundred bucks and others can be five hundred. You will get what you paid for. For me this is what I needed and am very pleased with it.

12 people found this helpful

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Top reviews from other countries

Translate all reviews to English

Cliente de Amazon

1 año de uso

Reviewed in Mexico on May 16, 2020

Size: X-LargeColor: BlackVerified Purchase

Despues de un año de uso sigue como nuevo, por el grosor es excelente para veranos en climas calurosos, sin embargo no es muy bueno para agua fria

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Hector Castañeda Mzt

Excelente Producto

Reviewed in Mexico on December 13, 2017

Size: LargeColor: Black Smoke TahitiVerified Purchase

elegí esta calificación ya que el producto viene con excelente calidad y excelente acabado no se podría esperar menos de Oneil, adicionalmente las especificaciones y colores que vienen en la descripción del producto son tal cual en la realidad, el servicio de entrega fue relativamente rápido y no se extendieron en el tiempo de entrega.
recomiendo este producto a las personas que tengan una estatura máxima de 1.78 ya que podría quedarles algo ajustado. también para aguas frías o en invierno ya que no es muy cómodo en aguas cálidas. yo lo uso para Bodyboard se a diere bien a la tabla, pero sirve perfectamente para surf y mas deportes acuáticos.

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james

Great fit

Reviewed in Canada on June 26, 2023

Size: Large TallColor: BlackVerified Purchase

I am 6’4 and 185lbs and this suit fits like a glove.

Mauricio R.

Muy buena calidad

Reviewed in Mexico on December 13, 2019

Size: X-SmallColor: BlackVerified Purchase

El traje es de muy buena calidad, resistente, todo lo que dice la publicación, me gustó mucho

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Cliente de Amazon

O 'Neill Mens 3/2 mm Reactor Full Suit

Reviewed in Mexico on August 2, 2017

Size: X-LargeColor: BlackVerified Purchase

Excelente traje para todos los deportes acuáticos, muy cómodo un agarre perfecto el muñecas y tobillos material muy resistente, el pecho y la parte de la espalda que cubre los pulmones contienen muy bien el calor, recomiendo el traje 100%

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O'Neill Men's Reactor 3/2mm Back Zip Full Wetsuit

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