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Outdoor Research
Argon Long-Sleeve Top - Women's

4.75 out of 5 stars
12 Reviews
Current price: $38.97 Original price: $64.95
40% off


Size Chart


Why We Like The Outdoor Research Argon Long-Sleeve Top

With the Argon Long-Sleeve Top from Outdoor Research, we are kept dry, cool, and fresh as we spend the day hiking to a new summit. 83% of the top is made from recycled materials for eco-friendly construction while providing quick-drying, moisture-wicking, and breathable properties. Its flat-seam construction and raglan sleeves minimize chafing for all-day comfort, while the long sleeves with UPF 30 protect our skin from the sun's harmful rays.


  • A lightweight, long-sleeve shirt for hiking, trail running, and more
  • Built with recycled polyester and a splash of stretchy spandex
  • Fabric construction is breathable and moisture-wicking
  • ActiveFresh Odor Control keeps things feeling and smelling fresh
  • Minimal chafing with flat seams and raglan sleeves
  • UPF 30 and long sleeves protect the skin from the sun
  • Item #ODRZ8EN
Responsible Collection
83% recycled polyester, 11% polyester, 6% spandex
Center Back Length
UPF Rating
Claimed Weight
[medium] 5.6oz
casual, hiking, trail running
Manufacturer Warranty

Overall Rating

5 based on 12 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 3 reviews
5 Stars - 9 reviews

What do you think about this product?


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5 out of 5 stars

April 5, 2024

Perfect tech shirt- not too thin, great length

The Argon shirt is just right: not too thick or thin, for 3-season wear. As a 65-year-old I love that this shirt fits great (no snug workout clothes for me). The light gray color is a bit more visible when exercising outdoors, and perfect to wear with a vest. You need this shirt!


Originally reviewed on

5 out of 5 stars

March 7, 2024

Great fit and breathability for running

I use it for runs during cool weather. Love the breathability. Keeps me warm but not sweaty.


Originally reviewed on

4 out of 5 stars

February 3, 2024

Great Base Layer

Perfect to wear under a vest, sweatshirt or plaid!

Dirt Therapy

Originally reviewed on

5 out of 5 stars

August 15, 2023

Great shirt!

[This review was collected as part of a promotion.] Wearing this for hiking is a dream. It's comfortable, light and breathable. I like that the sleeves can be pushed up, as needed.


Originally reviewed on

5 out of 5 stars

July 22, 2023

Love this top!

[This review was collected as part of a promotion.] It fits so well and has such good lines to it, I can even wear it to the office!


Originally reviewed on

5 out of 5 stars

July 19, 2023

Lightest hiking shirt out there !

[This review was collected as part of a promotion.] Great hiking/ active shirt that is so lightweight and soft. Feels great wearing this on hikes this has been the best shirt I've used. Highly recommend !


Originally reviewed on

4 out of 5 stars

November 27, 2022

Nice shirt

I'm wearing this shirt for indoor workouts this winter and it is comfortable and breathable. I'm 5'5' and 140 lbs and the Medium fits nice. Plenty of armhole room and not too tight or loose. Long enough to cover the bum, but the sleeves are very long. Long sleeves might be a nice option for outdoor sun protection, but indoors I push the sleeves up to elbows.


Originally reviewed on

5 out of 5 stars

July 2, 2022

Favorite things

This top has become one of my favorites for hiking. Great sun protection without overheating.

user image

Originally reviewed on

4 out of 5 stars

May 23, 2022

Great to have in closet for colder weather.

Wear as base layer in fall/winter months. Great color.


Originally reviewed on

5 out of 5 stars

December 2, 2021

Love these shirts

These are great layers for cool weather running. I bought this in two colors and wear solo or coupled with a running vest depending on the temperature. Also great for hiking. I like to wear wool but my hydration packs will often cause wool to pill. This shirt has no issues with hydration packs or backpacks.


Originally reviewed on