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Thanks to a 2-in-1 design, the Mammut Extreme Siam GTX Glove brings versatility to your winter pursuits. While one glove layer focuses on dexterity, the other offers maximum insulation, and best of all, the user can decide whether to use these layers individually or together.

  • A Gore-Tex insert guarantees that your paws can breathe and stay dry even in the snow and rain
  • Hook-and-loop wrist closure and a gauntlet seal out the elements
  • Pull loops make for easy-on, easy-off action when you’re gearing up in the morning and settling down at night

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Mammut Extreme Siam GTX Glove

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Here's what others have to say...

5 5

so far so good...

  • Gender: Male

Decided to get a size 8 for better dexterity. Tip of middle finger to end of palm is about 7.5 inches.
Craftsman ship is superior, since I have not used them I can't tell you warm they are.

5 5

Satisfactory Siam

Used the gloves during a trip to Beaver Creek. They performed very well. The dual chamber is very convenient when you want either warmth or dexterity. Well done, Mammut.

4 5

Extreme Siam Gloves

First of all, the description of these gloves is inaccurate. It states that they have a removable liner, however this in incorrect, they do not. What they have is something called Gore-Tex 2-in-1 technology, which allows you to slide your fingers into one of 2 chambers in the glove. One chamber is warmer and insulated, and the other chamber basically puts your hand so that the warm chamber is on the back of your hand, giving your fingers more dexterity but less warmth. One would assume that the back of the hand would be twice as warm in this use case.

The outer shell of the glove seems really well constructed, as is typically the case with most Mammut products. The stitching is top notch, and the leather is very soft and supple, and has reinforcements just where you'd want them.

I can't speak to the warmth of the gloves. I am probably going to return them since what I really wanted was a glove that is a shell with a removable liner, which is what I thought that these were.



i confirm , size 7 is missing , we are size 7.
at a shop like backcountry , which is my favorite of all shop , you can't
miss a size . I'm not buying mammut gloves because of that.