Mammut T Aenergy GTX Boot - Women's

A lightweight boot that doesn't skimp on protection.

Cover miles on backpacking expeditions with the long-lasting durability and comfortable support that the Mammut Women's T Aenergy GTX Boot brings to your foot. Its Gore-Tex Performance Comfort lining gives this boot exquisite waterproofing that leaves the boot with wonderful breathability to keep your foot as comfortable on the tenth mile as it was on the first. The Hybrid Shell blends a sturdy 2Tone PA fabric with softshell to make the boot hard only where necessary, leaving the rest with soft support for enhanced comfort. It also combines two different yarns to create a technically functional boot that's also visually attractive. Mammut added a Liquid Rubber Protection over the synthetic overlays to boost durability.

This boot's Base Fit lacing system provides sliding webbing that transfers the lace's tightness down to the soles for an improved grip, increased safety, and enhanced comfort. The honeycomb-structured 3D-Textile inner material absorbs moisture fast to quickly dry your foot when you work up a sweat hiking under the sun, and Memo Foam covers your instep, shin, and ankle with long-lasting cushioning thanks to its excellent elasticity.

Mammut added an EVA wedge midsole with good damping properties that absorb shock and vibrations to keep your foot comfortable for miles. This boot's rubber toe cap prevents any painful toe-stubbing against stumps and protruding sticks. Its Vibram Scale sole consists of multi-directional mid-height lugs in a scaled arrangement that ensures maximum grip over all kinds of terrain, and its Rolling Concept provides a natural foot roll to prevent fatigue and to help reduce the danger of twisting your ankle in the middle of nowhere.

  • Gore-Tex Performance Comfort, Liquid Rubber Protection
  • Hybrid shell blends 2Tone PA with softshell
  • Base Fit lacing system
  • Memo Foam lining at instep, shin, and ankle
  • EVA wedge midsole
  • Rubber toe cap
  • Vibram Scale sole with Rolling Concept
  • Reviews
  • Q & A

Too Stretchy for me

  • Familiarity: I've used it several times
  • Fit: Runs large

These boots where comfy, didn't need breaking in, waterproof and sturdy. LOVE.. right? Well I"m aggressive hiker and after my first BIG hike they streached out an entire size, so I upgraded to the White Rose GTX Mammut boot that is full leather so a much stiffer materiel so they wouldn't stretch out. I would recommend the extra cash for a quality boot if you are an aggressive hiker or clock a lot of hikes a season! Check them out!

Will this take crampons?

Will this take crampons?

Best Answer

Hey Audra,

This boot will only work with strap-on crampons. There are no heel or toe welts on this boot to work with step-ins or hybrid crampons.


  • Familiarity: I've put it through the wringer
  • Fit: True to size

I use it on wet, snowy Manhattan winter streets. I've taken this on a winter hike in Bear mountain (strapped on some microspikes). I've taken this with me on my weekend snowboarding trips to VT. This thing can take a lot of beating and still stay dry. Best of all- it's extremely light and VEGAN. Wish they made it in black though. I feel like my blue shoes are an attention beacon. I wear a size 5 but smallest size this shoe came in was a 6. Luck would have it they fit better a size up because I wear these with thick microfiber socks and they are snug and warm.