Mammut Castor Pants

3 reviews
5-star:   3
4-star:   0
3-star:   0
2-star:   0
1-star:   0



Only soft shell that has it all. I am a 32 x 32 and…

Rating: rated 5 of 5 stars
Source: bought it new
Price Paid: £219


Only soft shell that has it all.


  • Waterproof
  • Windproof
  • Stretchy

I am a 32 x 32 and bought the small so I can wear them on their own. Lets get one thing straight from the start, you should only review something if it has been tested over time, which I have.

These are technically the best there is. I use these for everything and they are perfect in every way. I've had these for over two years, washed and constantly abused and they are still top dollar. Most use is hill walking in winter and summer, mountain biking with driving rain and sunny weather and now when i look for another pair of softshell trousers I can't see past these.

The fit is so good I can wear them anywhere as the cut is such a great fit.


These pants are comfortable and stretchy. They're…

Rating: rated 5 of 5 stars
Price Paid: $105

These pants are comfortable and stretchy. They're water reppellent and wind resistant as described in the product description. I did experience wet, windy, and cold conditions. They did get a little wet but they were not wet enough to be frozen the next morning.

I did experience some strong cold winds and the cold never made it to my legs. I'm very satisfied with this purchase.


The Castor Pants are not just for skiing anymore.

Rating: rated 5 of 5 stars
Fabric: Schoeller WB400 Membrane
Fill: none

The Castor Pants are not just for skiing anymore. They are also a "kick ass" alpine/ice climbing pant! I've been guiding in Colorado, Montana and Wyoming all winter and the Castor Pants have been my "Go To" pants for any activity, be it skiing, ice climbing, snowshoeing or just playing with the kiddies building snow forts and throwing snowballs.

After wearing these pants all winter I haven't noticed any of the usual "wetting out" that occurs on some other waterproof-breathable fabrics. On those days when I am outside for 16 hours at a time in nasty, wet and sub-zero weather I have never noticed any moisutre or wind breaking through the fabric of these pants.

The Schoeller fabric is waterproof, breathable and extremely durable and at the same time being light enough with just enough stretch built into the fit that I have never felt that my skiing or climbing was being compromised. Even performing figure-fours in these pants is casual.

I fit my pants one size too large (I'm usually a size 24 but I choose a size 26 instead) so I can layer insulated pants underneath. I guide in Alaska and when it gets really cold you will see me wearing Castors over lightweight down pants OR on nicer days just over a baselayer. Even getting these pants one size too big, the pant legs fit well enough that I don't catch crampon points in them. The built-in gaitor is a nice touch for skiing although some may see this feature as overkill for climbing pants. The ventilation leg zips work well when pushing hard on the uphills. Workmanship throughout is high quality.

Jack Roberts Team Mammut

rated 5.00 of 5 stars All Castor Pants versions

In addition to the 3 men's reviews above, there is 1 review for another version of the Castor Pants. Read all reviews »

Where to Buy

sponsored links
Help support Trailspace by making your next purchase through one of the links above.

Manufacturer's Description

Visit Mammut's Castor Pants page.

Retailers' Descriptions

Here's what other sites are saying:

Steep ice and mixed climbing require a specialized skill set as well as specialized outer wear. The climbing skills are all up to you, but Mammut has your lower extremities covered with the Men's Castor Softshell Pant. The Schoeller WB soft shell fabric provides water resistant protection from dripping ice curtains while the reinforced pant bottoms resist being shredded by sharp crampons.


The Castor pants are waterproof schoeller material which makes these high-altitude touring pants ideal for freedom of movement and they also have very good breathability. They have side ventilation with mesh inserts to help regulate temperature and edge and crampon protection for longer wear.


On Sale. Free Shipping. Mammut Men's Castor Pant DECENT FEATURES of the Mammut Men's Castor Pant Water-resistant outer material Coldblack makes dark colors behave almost like light colors, and absorbs up to 80% of the sunlight 2 side pockets, 1 seat pocket Side ventilation with mesh inserts Pre-shaped knees Edge and crampon protection with robust reinforcement material Integrated gaiters Regular Fit Areas of Use: Classical Alpinism, Mixed- and Iceclimbing, Alpine Skiing The SPECS of the Mammut Men's Castor Pant Weight: 685 g Main Schoeller - WB - formula, schoeller - keprotec Face Material: 94% Polyamide, 6% Elastane, 93% Polyamide, 7% Elastane, 72% Polyamide, 28% Aramide Membrane: 100% Polyurethane, 100% Polyurethane

- Moosejaw

Stay dry without sacrificing mobility and comfort in Mammut's softshell Castor Pant. Schoeller softshell fabric is water-resistant and super stretchy so you can kick steps and swing axes all day long. Stay cool with mesh-lined side ventilation panels and the ColdBlack finishing technology that makes dark colored material behave like light colors by absorbing less UV rays and diminishing heat build-up.

- Mountain Gear