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You'd rather look down on clouds than up at them, and the Mammut Nordwand GTX Mountaineering Boot shares your appetite for altitude. One of the flagships of Mammut's Eiger Extreme line, the Nordwand boasts a double Gore-Tex construction, tough textile gaiter, and a double insulated carbon shank.

Being one of the lightest boots on the market in its class, the Nordwand High GTX Boot is ideal for rapid ascents up mixed routes in the alpine. Its Base Fit technology prevents your foot from slipping within the boot. Mammut's popular Easy Entry system allows you take the boot on and off quickly and easily, without having to remove your gloves. Mammut fitted the full gaiter with a Gore-Tex waterproof membrane secured it with a water-resistant YKK zipper. The double insulated carbon shank reduces the overall weight of the boot while maintaining a rigid platform to push yourself further up the route. 

  • Gore-Tex inner boot
  • Synthetic leather upper
  • Textile gaiter with Gore-Tex
  • Watertight zipper
  • Speed lace system
  • Power strap
  • Watertight zipper
  • Insulated carbon shank
  • Poro wedge midsole
  • Vibram Teton sole
  • B2 crampon compatible
  • B3 flex index

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Updated Review

  • Familiarity:I've put it through the wringer
  • Fit:True to size
  • Height: 6'4"
    Weight: 220 lbs
    Size Purchased: US12 I think

I purchased an earlier version of these boots in 2013 and my initial review was all positive after a first trip with them. They fit great, are nice and warm, and stay pretty dry.

Since my initial trip with them I have done a few more climbs (Hood, Rainier), and some mixed ice climbing in North Carolina and New Hampshire.

I have found a fatal flaw in the zipper that others mentioned. If ANY dirt gets in the zipper it is nearly impossible to open/close the zipper. I was on Rainier working through some dirt/scree areas and found afterwards I couldn't open the zipper.

After about 30 minutes I got it opened and cleaned as best I could. I have gone through the zipper with air cannisters and cleaned/lubricated. Now the zippers open/close ok but not great. You can still hear the grit in there. My concern is having them lock up while on a mountain somewhere and having to do some high mountain repair work.

Basically an amazing boot with a horrible zipper. I hope to get a few more climbs out of them before the zippers totally die.

Maybe try some paraffin wax on the zippers. I extended the life of some tent zippers in the Afghan Pamir (super dry and dusty) by running candles over the teeth. Acted a s along-lasting lube and displaced some of the dust.