Search  for anything...

O'Neill Men's Reactor-2 1mm Short Sleeve Top

  • Based on 179 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $13.61 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Jun 15
Order within 14 hours and 47 minutes
Available payment plans shown during checkout

Color: Black


Size: X-Large


Features

  • Neoprene Rubber
  • Imported
  • Should fit snug, but not too tight
  • FluidFlex 2 Neoprene/UltraFlex
  • Single Super Seal collar: fully adjustable Seal
  • YKK back zip system
  • Flatloc Stitched (breathable seams) with Strategic seamless Paddle Zones
  • Xtra Large (Chest: 43.5"-46", Waist: 35"-37", Height: 5'11"-6'1")

Material: Neoprene


Color: Black


Brand: O'NEILL


Item Thickness: 1 Millimeters


Sport: Surfing


Closure Type: Zipper


Chest Size: 44.5 Inches


Sleeve Type: Short Sleeve


Age Range (Description): Adult


Size Map: X-Large


UPC: 191015031759


Global Trade Identification Number: 59


Brand Name: O'NEILL


Sport Type: Surfing


Age Range Description: Adult


Sleeve Type: Short Sleeve


Closure Type: Zipper


Size Map: X-Large


Chest Size: 44.5 Inches


Item Thickness: 1 Millimeters


Color: Black


Material Type: Neoprene


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Worth every dollar
Color: Black Size: Large
My husband works outside in all weather conditions. When one really rainy day, his coworker told him about these O'Neill shirts he got for this specific weather condition. So we did the "try before you buy" because its a lot for one shirt. Think of a wetsuit. Wetsuits keep you warm even when you're in cold waters. this helps too with rain! By husband wore this under all his layers, even had rain gear on for the day when that day it was supposed to rain all day long. He said his rain gear only keeps him dry for so long and then its useless because your layers get drenched, heavy and cold too. He raved about this shirt and how it not only kept him warm, but he felt more dry too! Keeping your torso warm when its cold out is crucial. Needless to say we bought it and kept it. True to size. if you're a large and usually get a medium for underlayers, don't. get the large and itll fit you snug like a medium undershirt would. these are true to size. only con; at his armpits where his arm creases, there was chafing. Cant avoid that so we will have to put some tape or gauze of some sort on him before he wears it so he doesn't chaff there with this shirt. ... show more
Reviewed in the United States on January 28, 2024 by Hannah Marie

  • Sizing info…..
Color: Black Size: XX-Large
Just a heads up I am 6‘3“ weigh 200 pounds and a size 34 waist size and a XXL was a perfect fit for me
Reviewed in the United States on November 1, 2024 by daniel hyman

  • Size runs smaller than usual
Color: Black Size: Medium
Not a good fit despite following size chart. Had to return! Medium, looks more like Small. Quality and material seems good. No back zipper or front zippers.
Reviewed in the United States on August 11, 2024 by mawen

  • Nice shorty wetsuit top if you find the right size
Color: Black Size: X-Large
My husband was looking for something to wear inside a swimming pool while teaching our granddaughter how to swim. Wanted something to keep him a little warmer in a cool pool since he would not be swimming to keep warm. I have seen mixed reviews regarding the sizing. We found the suit definitely fits on the small side. We went by the size chart to begin with and the top was tiny. Returned and ordered the next size. Even that seemed small. Tried XXL and that was too loose under the arms. My husband is 5'8" and around 150lbs. so not large. ... show more
Reviewed in the United States on June 30, 2023 by k_m

  • Comfortable
Color: Black Size: Medium
Great fit, it's comfortable to wear, warm enough (for colder days in Hawaii). Only down side I'd say would be the t-shirt tan, but it's the price to pay for wearing short sleeves and better paddle-ability.
Reviewed in the United States on February 28, 2024 by Alex

  • INCREDIBLY TOO SMALL
Color: Black Size: XX-Large
This well made exposure swimming shirt is INCREDIBLY under sized. I bought a XXL ( since I wear a XXL t shirts) and when i received it I was amazed how small it is. I dont think it would fit on my seven year old grandson.
Reviewed in the United States on August 4, 2023 by Amazon Customer

  • Perfect
Color: Black Size: Medium
I needed something to use on those very typical new jersey days when a 3/2 wetsuit is overkill, but a plain rashguard would give me the shivers. It has a nice tight feel when i wear it and looks great with board shorts. Make sure someone's with you when you need to take it of though. My wife had to rescue me out of it when i tried to take it off myself after a long surf session, i couldn't fight my way out of the shirt. Not bad putting it on when dry though. ... show more
Reviewed in the United States on January 13, 2019 by Jessie

  • Good to keep the chill off
Color: Black Size: Large
Nice layer for early morning spring sessions. Good for water temperature around 65
Reviewed in the United States on May 13, 2024 by dav

Can't find a product?

Find it on Amazon first, then paste the link below.