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  • Helps eliminate evaporative heat loss and protect against hypothermia if you capsize in chilly water
  • Stretchy 3/2mm neoprene forms to your body for a flexible, comfortable fit; flatseam construction prevents chafing
  • Flexible neoprene in sleeves and shoulders promotes freedom of motion, and chest and back feature thicker neoprene panels to enhance insulation
  • Rear zipper secures fit, and protective internal flap shields your skin from abrasion
  • Hook-and-loop neck tab and long rear zipper pull ease dressing
  • Abrasion resistant, durable knee pads increase the life of the wetsuit
  • Internal key pouch
  • Seamless paneling under sleeves promotes unrestricted motion and won't irritate your skin
  • O'Neill recommends the Reactor 3/2mm Full Wetsuit for water temperatures ranging from 68°F to 79°F
  • Hand wash the men's O'Neill Reactor 3/2mm full wetsuit in cold water, drip dry out of sun and store in a cool, dry place


View all O'Neill Long Wetsuits

REI membership


Best Use Paddling
Fabric Neoprene
Sleeve Length Long Sleeve
Gender Men's
Zipper Location Rear

Size chart

Rated 5 out of 5 by from Great value and performance! Purchased the O'Neill Reactor for late spring thru early fall surfing in New Jersey. Used for first time today in 60F. water. Performed as promised, warm and flexible. I initially ordered a medium and exchanged it for a large. I am 5'10, 164 lbs, BMI 23.5, 30 in waist and 38 chest. Although the size chart indicated a M, the large is a perfect fit.
Date published: 2014-06-04
Rated 5 out of 5 by from Good suit runs small This is a good entry level suit. Good quality, fit, and function. I normally wear a large tall in wetsuits. this one was a good fit in XL. I'm 6'1 185lbs. 34" waist
Date published: 2016-05-27
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Does this have the Z.E.N. zip closure system?

Asked by: AKelly
​No, this wetsuit does not have the Z.E.N. zip closure.
Answered by: REIservice
Date published: 2016-12-09

Would this wetsuit be good for a trathlon?

Asked by: beermpoetry
​This will be a good choice for use during a triathlon.
Answered by: REIservice
Date published: 2017-03-20

What is the difference between this and the O'Neill Epic?

Asked by: David
The Epic is rated for colder water temperatures: Epic 50° F – 68°F Reactor 68° F – 79° F
Answered by: REIservice
Date published: 2017-03-03

Is this a good wetsuit for open water swimming?

Asked by: Ofmodestmice
This wetsuit is a great choice for open water swimming in water temperatures ranging from 68°F to 79°F.
Answered by: REIservice
Date published: 2017-03-14
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