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Aconcagua ML Tight - Men's

4.733333333333333 out of 5 stars
15 Reviews
Current price: $69.50 Original price: $139.00
50% off
Color:Deep Ice


Size Chart


Why We Like The Mammut Aconcagua ML Tight

The versatility of the Mammut Aconcagua ML Tight stands out with its combination of two fleece fabrics to regulate our temperature in cold weather activities. The Power Stretch Pro features light insulation and plenty of stretch for mobility while the lower legs feature Power Grip fleece with less volume and better moisture management. We can wear them under our hardshell pants as a thermal layer when skiing and mountaineering and wear them on their own when we're hiking or running around town.


  • Versatile tights for cold-weather activities
  • Power Stretch Pro fleece for breathable warmth and mobility
  • Lighter Power Grid fleece facilitates moisture management
  • Elastic waistband for a perfect fit
  • Zippered leg pocket to store small items
  • Item #MAMU5KE
Responsible Collection
[materials] bluesign® APPROVED
[main fabric] Polartec Power Stretch Pro (39% nylon, 52% polyester, 9% spandex), [lower leg inserts] Polartec Power Grid (89% polyester, 11% spandex)
Insulation Weight
1 zippered thigh
UPF Rating
Claimed Weight
skiing, snowboarding, mountaineering
Manufacturer Warranty
limited 2 years

Overall Rating

4.5 based on 15 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 4 reviews
5 Stars - 11 reviews

What do you think about this product?


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5 out of 5 stars

January 18, 2024

Long wearing all day long

Great tights for multiple uses. Use them alone on warm days and as a base layer when it gets cold. The temperature finally dropped and they are my go-to base layer. I'm trying to wear them out, but its not working! Beginner or expert this will serve you well.

Originally reviewed on

5 out of 5 stars

November 30, 2023

Warm Flexible Baselayer

With the fleece lining and flexible materials this baselayer has kept me warm in below zero Temps. Will buy more pairs as they are currently my favorite baselayer for legs on cold days.

Harrison L

Originally reviewed on

4 out of 5 stars

November 2, 2023

Winter bottom layer meant too keep you warm!

These leggings are form fitting and flexible. No shifting while climbing and they are very warm. Definitely could be used as a running layer by themselves as well. Minus the one star for pocket size but if they are a bottom layer it won't matter! Quality product, highly recommend.

Originally reviewed on

5 out of 5 stars

May 17, 2023

Great Thermals

Versatile thermals! Can be used on its own (running) or as a base layer for skiing, BC skiing, or ice climbing. The waist is comfortable and the material is soft and dries quickly. Super warm! Buy it!!!

Originally reviewed on

5 out of 5 stars

March 16, 2023

Fits as expected, warm!

Perfect mix between tight and allowing my skin to breathe while working up a sweat. Thicker fabric, but surprisingly lightweight. Recommend under a light softshell pant to extend its comfortable range, or under a heavier pant to really be able to spend all day out in the cold. Used for ice climbing, winter astrophotography, and winter camping so far, times when I'm hiking to/from but then standing/sitting in one (cold) place for a while. Just note that these are NOT ideal for high output, sweaty activities, as they're somewhat thick.

Originally reviewed on

5 out of 5 stars

January 10, 2023

Mens tights

Super comfy and no chafing - winter running tights for the win . And a warm baselayer under ice climbing or backpacking clothing if needed. Little expensive- but so far worth it. Thigh pocket can fit a single car key and chapstick , and not much else - I'd prefer it wasn't there but all in all still a great product. Fits on the roomy true to size .

Seth B

Originally reviewed on

5 out of 5 stars

November 10, 2022

Warmest Layer You'll Ever Own!

I haven't found any baselayer that can match this pair for warmth and comfort. Butter soft and toasty warm. Definitely recommend!

Hannah H

Originally reviewed on

5 out of 5 stars

March 17, 2022

Very Warm

Super Warm, and the pocket is perfect for my wallet

Ben M

Originally reviewed on

4 out of 5 stars

February 1, 2022

Great mid-weight tights... watch sizing

These are a great addition to the winter repertoire, but watch you sizing. Im 6'1 and 185lbs with 32-33inch waist. These don't have a drawstring and if I lose the 8-10 pounds I want to, the elastic waist band might not be up to the task. Otherwise they are fabulous.

Trevor M

Originally reviewed on

5 out of 5 stars

January 23, 2022

Winter Pow(d)erhouse

Bought this for skiing this year, couldn't be more pleased with its performance. Stayed warm and toasty in high wind, 5 degree weather. Great design with thinner material near the bottom of the leg to fit into ski/snowboard boots and loved the little pocket. Would highly recommend if you're looking for a base layer for those cold weather activities.

Originally reviewed on