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Mountain Hardwear
Crater Lake Long-Sleeve Crew Shirt - Men's

4.666666666666667 out of 5 stars
21 Reviews
Current price: $32.99 - $41.99 Original price: $59.99
Up to 45% off
Color:Blue Slate


Size Chart


Why We Like The Crater Lake Long-Sleeve Crew Shirt

When the sun's creeping over the mountaintops, we don't want to stop and reach for sunscreen mid-trek, so we're glad we're hiking in the Crater Lake Long-Sleeve Crew Shirt. Its UPF 50 rating and secure cuffs keep us covered when the solar rays take over the starry morning sky. Breathable synthetic fabrics keep us comfortable as the day heats up, and raglan sleeves give us the mobility we need when we hit the steeper sections of the trail.


  • Sun-blocking long-sleeve shirt for early mornings and summer days
  • Stretchy polyester threads wick moisture for cool all-day comfort
  • Classic crewneck silhouette with raglan sleeves for mobility
  • Thumbhole cuffs keep sleeves in place while on the move
  • Item #MHWZ9O5
88% polyester, 12% elastane
Center Back Length
UPF Rating
Claimed Weight
running, training
Manufacturer Warranty

Overall Rating

4.5 based on 21 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 1 reviews
5 Stars - 18 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

What do you think about this product?


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5 out of 5 stars

June 20, 2024

Love this shirt

I've used it several times
Size Bought:

We just headed out on a two week hike up the coast of Spain and love the sun protection, lightweight and easy to clean/dry Mountain Hardware shirt!

Bruce C
5 out of 5 stars

June 3, 2024

My favorite hiking shirt!

This is a wonderful, lightweight, comfortable shirt. It line dries quickly after washing. Love it!


Originally reviewed on

5 out of 5 stars

May 16, 2024

Great Shirt!

Great Shirt! I've used it as a base layer on chilly mornings or worn as a stand alone on warmer days. Material breathes well so you don't overheat on warmer days. Fits as expected.

Bill K

Originally reviewed on

5 out of 5 stars

May 9, 2024

Bike Rides

I really like this long sleeve shirt. Fit is great, a lot of movement in the pits and Thumbholes! Love the thumb holes. I pair this with the MountainHardWear Polartec PowerGrid half zip for bike riding and it is perfect.


Originally reviewed on

5 out of 5 stars

April 19, 2024

My favorite shirt

I've put it through the wringer
Size Bought:

These have become my new go-to shirts. I’m steadily filling up my closet with them. They are super soft and comfortable and moisture-wicking. The fit is just right, too. They run very true to size. Highly recommend these shirts,

5 out of 5 stars

January 18, 2024

Light Sun Protection

Extremely lightweight. Good sun protection while staying as cool as possible when running or hiking in hot sunny weather. True to size.


Originally reviewed on

5 out of 5 stars

December 31, 2023

Extreme Qaulity

Most comfortable shirt I have for a wide range of weather.

user image
Steve F

Originally reviewed on

3 out of 5 stars

December 13, 2023

Need recommitting to 'wicked' technology

Okay as a substitute for wicked long sleeves, wish we could have better option for wicked, this is okay


Originally reviewed on

5 out of 5 stars

September 18, 2023

New Favorite Shirt

This is the perfect light weight long sleeve shirt for every season. It is great quality, packs well, and a great long sleeve shirt for everyday wear, hiking, fishing, etc. It fits perfect and hasn't shown any sign of wear despite its use. I enjoy it so much that I purchased the same shirt in five colors! I hope Mountain Hardwear continues to make this shirt for a long time.


Originally reviewed on

5 out of 5 stars

September 5, 2023

Great Shirt

Bought this a couple months ago and wore during an 8-day trek on Kilimanjaro and a few days of a Safari. Was super light and very comfortable and great at keeping the sun off. Really like the shirt.


Originally reviewed on