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Aconcagua ML Long Tight - Women's

4 out of 5 stars
8 Reviews
Current price: $83.40 Original price: $139.00
40% off


Size Chart


Mammut Aconcagua ML Long Tight

Versatile tights you can wear under hardshell pants when skiing, mountaineering or even on their own when hiking. The combination of two high-quality fleece fabrics provides for optimal temperature regulation. The main fabric made of Polartec® Power Stretch® Pro material is comfortable, extra durable and incredibly stretchy. The lower leg section is made with Polartec® Power Grid™ fleece for excellent moisture management and less volume. The tights fit perfectly thanks to the elastic waistband. They are made to offer superior quality and are extremely durable. Now in its third generation, the Aconcagua family still holds its own on expeditions, long and short outdoor adventures and is also suitable for everyday wear.

[face fabric] 52% polyester, 39% nylon, 9% elastane, [insert] 89% polyester, 11% spandex
Insulation Weight
1 zippered thigh
UPF Rating
Claimed Weight
skiing, snowboarding, mountaineering, hiking
Manufacturer Warranty
limited 2 year

Overall Rating

4 based on 8 ratings

Review Summary

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

What do you think about this product?


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4 out of 5 stars

January 4, 2023

I score the product a 7 with 4 stars because the pant is constructed well. I wished there was a mention about the fitting in the specs. I'm usually a size medium and thought that a large would fit snug. However, it's super loose with the elastic band in the back. I love the polartec material against my body, which is why I bought this pant. It can be used as a base layer or around the town with a long tunic or parka.

Katherine D

Originally reviewed on

5 out of 5 stars

January 3, 2023

Thick Fleece Tights for Cold Days

These tights are absolutely the warmest, most comfortable pair that I own! They are perfect for trail running in super cold temps. I wore them in 10 degrees and I was warm on my bottom half! The only downside is that they fit a bit big. I'm normally a size small, but they slide down a bit when I'm running.

Originally reviewed on

3 out of 5 stars

December 22, 2022

Another great product with difficultly on fit

Super stoked about these tights but the waist was SOOOOO loose on them they weren't useable for jogging (they literally fell off, I tried to see if maybe they were just sagging a bit in the crotch but would stay on... nope, they were halfway down my booty!). I was able to sew a much tighter elastic band in them which essentially took out 3-4 inches of waist. I am NOT a small waisted woman either. The pants seem to fit well in the thighs but are really large in the waist. Other than the waist fit issue they are warm and cozy which is what I was looking for!

Emilie M

Originally reviewed on

4 out of 5 stars

December 31, 2021

Warm Base layer for skiing

Very comfortable to wear. I'm not sure how it is going to hold up overtime as it does stretch out a lot. The fit a little on the larger side in the waist and butt area. There is an elastic at the back, however it is still slightly too large in the waist (My waist is 26"). Next time I would purchase an XXS

Breann E

Originally reviewed on

5 out of 5 stars

December 31, 2021

Très confo et très chaud pour les activités pleins aires

Originally reviewed on

4 out of 5 stars

December 8, 2021

Size down for sure!

These leggings are super comfy and warm--I honestly forget I'm wearing them. I sometimes use them as an exterior layer when climbing, but will use as a mid-layer this winter for skiing. They lose points because after only one wash they are pilling already. Also, the waist is baggy. I'm a size 8 normally in outdoor brands, so I went with medium, but I definitely should have gone with small. For reference I wear large Mammut tops (but they are a bit roomy). I know these are designated "long," and that they certainly are. I'm 5'4" and have tons of extra fabric. Next time I would go with the 3/4 length; it would probably reach to my ankles. Some of that is just my inability to pick the right size, but the pilling is a universal issue.

Josephine B

Originally reviewed on

2 out of 5 stars

February 2, 2021

Poor fit, legs not long enough so pull down, Medium waist more like a large or XL

These are advertised as long, but the inseam is only 28.5" out of the package. The legs are tight at the bottom, which makes the pants pull downward, and the seems hit right on the kneecap. The waist is very loose, more like a Lg. or XL hip and waist, so there is no chance they will stay up. I'm so disappointed, usually Mammut products are great and I was anticipating better design.

Bonny G

Originally reviewed on

5 out of 5 stars

November 13, 2020

The pants are THE BEST

This is my 3rd pair of these pants--they're durable, but I've worn through two pairs. Because I basically wear them every day they're clean, all winter. Soft and comfortable, warm and awesome. I wear them to hike, bike, ski, etc.

Marin B

Originally reviewed on