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Selun FL Sun Hoodie - Men's

4.777777777777778 out of 5 stars
9 Reviews
$59.50 - $85.00
Up to 30% off


Size Chart


Why We Like The Mammut Selun FL Sun Hoodie

For long days adventuring outside, overcast or not, we're pulling on the Mammut Selun FL Sun Hoodie. As the ultralight build wicks away moisture and dries off quick to keep us cool as we move, it also helps stop UV rays from reaching our skin. Featuring an anti-odor treatment, this layer stays fresh through multiple wears, while the recycled fibers and low-chemical dye keep our carbon footprint light.


  • Lightweight hoodie to stay cool and protected under the summer sun
  • Recycled performance blend for moisture management and stretch
  • Solution dye uses less water and chemicals for eco-friendly color
  • Treated fibers block harmful rays and resist odors
  • Offset shoulder seams increase comfort under pack straps
  • Integrated hood, neck gaiter, and thumbholes increase coverage
  • Item #MAMU5MR
Responsible Collection
[face fabric] bluesign® APPROVED, Recycled/Repurposed
92% recycled polyester, 8% spandex
fixed, 3-panel, integrated neck gaiter
HeiQ Fresh FFL (silver free)
UPF Rating
Claimed Weight
climbing, hiking, backpacking, running, mountaineering
Manufacturer Warranty
2 year

Overall Rating

5 based on 9 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 8 reviews

What do you think about this product?


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5 out of 5 stars

June 14, 2024

Great sun hoodie for colder temps!

Awesome quality, and the neck gaiter makes it nice and warm but not too warm. Great for backcountry skiing or alpine climbing in the spring!

Mike O

Originally reviewed on

5 out of 5 stars

December 19, 2023


Comfortable, superb quality, and doesn't hold smell.

Originally reviewed on

5 out of 5 stars

August 23, 2023

Go to Sun-Shirt

This sun-shirt has an incredible number of features. It is lightweight and stays cool even while baking in alpine sun. It's hood fits well over a helmet and stays on during long days. I have 3 shirts like it and this is my go-to one for any form of climbing

Originally reviewed on

5 out of 5 stars

July 22, 2023

Great addition to the crag bag

About the right weight of fabric to keep you warm, but not to warm on a cool evening at the crag. Good Freedom of movement and functionality. Already thinking of buying another. Others have mentioned using this as a base layer...I can't say I'd be using it for this. The fabric isn't very breathable and can leave you pretty clammy/stuffy feeling. For me, it's more of an on/off layer for the cool evenings, shade, or wind.

Originally reviewed on

5 out of 5 stars

July 1, 2023

Selun FL Hoody

I really like these style of hoody for summer alpine/rock guiding. Light and comfortable fabric. It's great that the fabric is recycled polyester and is bluesign built. Keeps the sun off part of my face and neck keeping my cooler and more efficient.

Originally reviewed on

5 out of 5 stars

May 24, 2023

Excellent sun shirt

This shirt keeps me warm enough when it's cold and cool when it's warm. It can go multiple days of activity without getting stanky and can still do it's job. The hood fits really well under a hat and or helmet.

Originally reviewed on

5 out of 5 stars

May 23, 2023

Solid Hoodie for Spring/Fall

This is a great sun hoodie that is more substantial than most. It gets full neck coverage and has material you can even pull up over part of your face. The sleeves also have thumb loops to keep them in place and warmer. The material is too thick for a hot weather sun hoodie. At the very least, you'd need to go with a lighter color. The dark blue on a sunny day absorbed too much heat. I think this would be ideal for Spring and Fall weather. I use something lighter from May through August in the NY area. Quality material and well-cut. I am happy with size Large and am 5'10" 17lbs.

Originally reviewed on

3 out of 5 stars

May 17, 2023

So close but there are better sun hoodies out there

I have the skin complexion of Mead college ruled writing paper and depend on sun hoodies to get out there during the summer months. I have tried many different sun hoodies over the years because physical barriers are my go-to sun protection. I have already learned that I am bad at reapplying sunscreen throughout the day and sun hoodies are a game changer for me. My review is based on wearing the Selun FL as a standalone top, no undershirt or layers. The Mammut Selun FL does block the sun and help to prevent sunburn. The construction is top notch as one would expect from a premium brand. First, the seams are flat which is very nice, but Mammut should have considered a wooly nylon type of thread to make them less abrasive against the skin or at minimum reduced the threadcount for the type of seam (it appears to be a 4 thread seam making the stitching very dense). The fabric itself appears to be midweight as far as sun hoodies go. Its definitely not the lightest but not the heaviest either. It more closely resembles the fabric used in sun hoodies for water sports. The overall pattern used for construction does not have seams on the shoulders which help when carrying a pack. However, this same pattern causes the entire body to rise when raising your arms. Not just a little, it comes up quite a bit. A feature I really like is the integrated neck gaiter. It is superb and a very nice feature for long days in the sun. Although the thumbloop feature seems as if it were an afterthought and is made by sewing in a small strip of fabric vs integrating it into the cuff design. Overall I will relegate this to higher altitude duty since it is heavier and less comfortable than some others I have. I feel it would excel in this environment where it isn't 90+F outside but you still need serious sun protection and won't get too warm with a layer on underneath.

Originally reviewed on

5 out of 5 stars

May 7, 2023

You'll never want to use a different base layer

I brought this and two other base layer tops on a 7-day spring ski traverse. I ended up using only the MAMMUT Selun FL Hoody because it performed so well in sunny conditions. The hood and neck guard allow you to hide from UV rays and stay cool. The green color kept my temperature in check much better than my other black base layers which would have gotten way too hot.

Originally reviewed on