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Outdoor Research
Astroman Long-Sleeve Sun Shirt - Men's

4.649484536082475 out of 5 stars
194 Reviews
Current price: $65.97 - $87.96 Original price: $109.95
Up to 40% off
Color:Black

Size:

Size Chart

Quantity


Stay cool and protected under any sun with the Astroman LS Sun Shirt's stretch and ventilation

What Our Gearhead® Experts Are Saying:


"I love the Astroman LS Sun Shirt for everything from desert hikes to alpine approaches. It's lightweight, super breathable, and offers enough stretch that I never feel restricted when scrambling or casting a fishing line. Plus, the built-in UPF protection gives me one less thing to worry about on long days outside."


Whether we're hiking exposed ridgelines or paddling along sunny coastlines, the Astroman LS Sun Shirt from Outdoor Research keeps us shielded and comfortable. Built with lightweight, stretchy fabric and boasting UPF 30+ sun protection, this shirt lets us move freely and confidently without overheating under the sun's full force.


The technical blend of nylon, spandex, and polyester delivers both abrasion resistance and breathable comfort, while strategically placed snaps and underarm gussets enhance mobility and venting. Hidden features like the zippered chest pocket and snap-up collar offer extra versatility, making it a staple whether we're climbing, trekking, or traveling.


Details

  • Lightweight, stretchy sun shirt designed for active outdoor pursuits
  • Built-in UPF 30+ (light colors) to 50+ (dark colors) sun protection shields against harmful UV rays
  • Quick-drying and moisture-wicking fabric keeps us cool and dry
  • Gusseted underarms and stretch construction enhance mobility
  • Snap front closure and adjustable cuffs for versatile wear
  • Hidden zip chest pocket stashes essentials securely
  • Recommended for hiking, climbing, fishing, and travel adventures
  • Item #ODRZ8E0
Material
85% nylon, 15% spandex
Fit
regular
Center Back Length
[medium] 28in
Style
button-up
Pockets
1 chest
UPF Rating
30+
Claimed Weight
[medium] 7oz
Manufacturer Warranty
lifetime

What do you think about this product?

Overall Rating

4.5 based on 194 ratings

Review Summary

1 Stars - 4 reviews
2 Stars - 5 reviews
3 Stars - 8 reviews
4 Stars - 21 reviews
5 Stars - 156 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

Customer Images

Here's what customers have to say

The shirt is described as lightweight, breathable, and comfortable, providing good sun protection. Reviewers praise its versatility, noting it is suitable for casual and more formal occasions. Some mention the quick-drying properties and convenience of the snap buttons, while others note the lightweight material can be prone to snagging or pilling with extended use. Overall, the shirt is considered a high-quality, functional garment well-suited for outdoor activities, travel, and everyday wear.

AI-generated from the text of customer reviews.

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5 out of 5 stars

August 19, 2025

New favorite

Absolutely love the material this shirt is made of and how it fits. It is slightly tapered. It looks professional, but also is durable and just stretchy enough for it to be used as active wear. I wear mine for work and also when hiking. I bought a second one because I liked it so much. I cannot recommend this button down enough. The shirt is cooling and will keep you dry in the summer.

Jack S
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

August 3, 2025

Light and soft

Familiarity:
I've used it once or twice and have initial impressions
Size Bought:
XXL

I can’t speak to the durability yet, but the fit and feel is great.

Garrett
5 out of 5 stars

July 1, 2025

Amazing feel and stretch!

I wear these everywhere!! On the trail, fishing, backyard, anywhere outdoors. Its got an incredible feel and stretch. Its pretty good at breathing but not elite. However ill take the heat in exchange for the great look, snaps, and collar. I even wear these to work in 100 degree days over the summer. Go get one they look and feel great.

Ryan B
ExpertVoice.com

Originally reviewed on ExpertVoice.com

2 out of 5 stars

June 30, 2025

Ran smaller than I had expected. More of a summer dress shirt than a work shirt I intended it for.

Ethan H
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

June 30, 2025

This shirt keeps me protected from the sun and keeps me cool. I work construction and wear these on the days I have meetings with customers. I would highly recommend this shirt

Dylan B
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

April 24, 2025

Most comfortable summer dress shirt ever...I wear it to work, church and out.

James W
ExpertVoice.com

Originally reviewed on ExpertVoice.com

5 out of 5 stars

April 19, 2025

New favorite hiking shirt

I wore this shirt hiking in the Utah National Parks this month and it was the absolute best piece of gear to bring. Quick drying, incredibly breathable, and protected me in the 85 degree sun. I wore it most days while wearing a pack and there’s absolutely no pilling on the fabric where the pack made contact

user image
PNWGrayGuy
outdoorresearch.com

Originally reviewed on outdoorresearch.com

1 out of 5 stars

April 19, 2025

UPF Rating is only 30

Familiarity:
I've used it once or twice and have initial impressions
Size Bought:
S
Height:
5' 9"
Weight:
145

I noticed that this shirt is thin. Backcountry's product description says UPF rating is 50+. Yet, the tag says UPF of 30.

Eddie
5 out of 5 stars

March 18, 2025

Great Shirt but please answer my question!!!

Great shirts! Could always use more solid colours! But one question to the designers…why the odd choice of slanting the fabric orientation on the left front shoulder/chest? It really keeps the piece as an outdoor garment and limits the wearability in a travel/city situation.

Confused529
outdoorresearch.com

Originally reviewed on outdoorresearch.com

4 out of 5 stars

March 7, 2025

Great lightweight shirt. Work in the private security sector. Have nearly every color of the Astroman line. OR makes some quality products. Been using them since working in SOF.

Luke C
ExpertVoice.com

Originally reviewed on ExpertVoice.com

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