Mammut

Taiss Pro High GTX Mountaineering Boot - Men's

EXCEPTIONAL

Familiarity:

I've used it several times

Size Bought:

10

Outstanding lightweight mountaineering book. First, it is EXREMELY comfortable, I put them on and thought I could go running in them. Second, the boa system is always good. Has the Mammut tighter heel up (which I 100% need) relative to Sportiva or Scarpa. I havent taken them into extreme cold, but my sense is it is fine for summer mountaineering.

Mammut for the win!

These boots are absolutely incredible. If you're looking for a pair of lightweight, insulated mountaineering boots that doesn't feel like you're walking in ski boots, these are them. They required basically zero break in time and are without a doubt the most comfortable mountaineering boot I have ever worn. I "broke them in" on Mt. Hood and didn't end up with a single blister. I was a little hesitant with the BOA system but I am super impressed with the fit. I had originally bought the Scarpa Ribelle Tech 2.0 and was pretty disappointed with the warmth. They are however just slightly less stiff so you might not want to ice climb with them.

Great Boots

These boots are amazingly comfortable and durable. Pretty stiff but once i got them broken in they are definitely the best boots ive ever owned

Awesome Boot

Very warm and comfortable. A little tight getting on and off in the beginning, had to stretch them out a little. These are replacing my La Sportiva Nepal. The boa system is cool, takes a little time to get used to.

Great product when paired with the right socks

I bought them for an expedition coming up, so they haven't been tested under very serious conditions yet. Have used them for ice climbing and while there is some flex in the sole (which makes them great for walking), it is a little difficult when ice climbing. I've also used them in -20C with merino wool socks, and they held their ground for the most part. When standing idly, I noticed my toes were starting to get a little cold. When using heavy duty Seal Skin socks, feet felt like they were indoors, very warm, even in -30C. I recommend if you're looking for something lightweight, compatible for beginner/intermediate ice climbing and mountaineering below ~6 000. Update: Just did a large trip in -30, kept my feet very warm throughout. While I did fall into a creek, I managed to dry them and they worked relatively well.

Perfect light winter boot

I am amazed at how light, warm, and well-built this boot is. I ordered a half size up, and fit is good with thick socks. BD Sabretooth crampons fit well, as I'm sure other brands do. I have used them in the Sierra Nevada and on the high altitude Mexican volcanoes, up to 18.5K feet, steep snow and glacier travel. Insulation underfoot is great, but since they are light, there is less insulation up top than a burlier boot. For me they are very warm to about 10 F/-12 C, which is more than adequate for the aforementioned locations. Temps colder than that you need to be moving, stopping for more than ten minutes likely will cause toes to cool down. Seen some reviews about it being hard to get boots on and off, I'd say it is about the same as ski boots or cowboy boots. My trick is to put weight on the heel welt with another boot or pole, and that helps me to leverage out, or just get a buddy to grab the heel and yank! Totally worth it to have the gaiter and dry comfortable feet.