• Subcategory

    Hiking Sandals

    Made of lightweight materials. They don't have much top-of-the-foot coverage so they're mostly suitable for well-maintained trails and summer hikes. Also useful for crossing rivers and streams. They come in open and closed-toe designs. See the best hiking sandals.

    Hiking Shoes

    The low-cut equivalent of hiking boots. Comfort is paramount in the creation of these shoes so they often have flexible materials. Generally used for day hikes. See hiking shoes.

    Hiking Boots

    Mid to high-cut models designed for more aggressive hikes and backpacking. See hiking boots.

    Mountaineering Boots

    Specialized footwear. Often insulated and used in technical routes, ice climbing or expeditions. See mountaineering boots.

    Good to know

    For hikes that won't last for more than a day, go with hiking sandals or hiking shoes. Tackling trails with greater challenges will require hiking boots or mountaineering boots.

  • Use

    Day Hiking

    Shoes or boots for hikes that only last for half a day. Flexibility and lightness are the highlights of these kinds of footwear. See the best day hiking shoes and the best day hiking boots.


    For multi-day trips with a heavy pack. Manufacturers emphasize durability and support in the creation of backpacking boots. See backpacking boots

    Speed Hiking

    Designed for users who want to cover a greater distance by going fast, usually with a light pack. See speed hiking shoes.

    Winter Hiking

    Boots that grant insulation to the user during hikes. See winter hiking boots.


    Mainly sandals. Aside from hiking they can be used for other purposes such as water activities. See multi-sport hiking sandals.

    Good to know

    Casual hikers can choose day hiking footwear or multi-sport sandals. More info here.

  • Cut


    Shoes with a cuff that goes below the ankle. See low-cut hiking shoes.


    Boots with an ankle-height cuff. They provide extra ankle support. See mid-cut hiking boots and mid-cut mountaineering boots.


    Boots with a cuff that goes above the ankle. In the case of insulated ones, they may reach the calf. Also grants extra ankle support. See high-cut hiking boots and high-cut mountaineering boots.

    Good to know

    Generally, for trails that are easy to tackle, go with low-cut shoes. Go mid to high if there are more trail obstacles.

  • Price
  • Feature
  • Weight
    Men: 21.2oz
    Women: 18.3oz
  • Width
    Men: Normal
    Women: Normal
Show more facts


We spent 8.4 hours reading reviews from experts and users. In summary, this is what hikers think:

6 reasons to buy

  • The T Aenergy High GTX’s lightness stunned a number of users.
  • Several owners considered this Mammut boot insanely breathable.
  • On the comfort front, this day hiker was rated quite highly by a handful of wearers.
  • Some purchasers appreciated the boot’s robust construction.
  • A couple of reviewers found this footgear very stable on unpredictable terrain.
  • Based on a report, the T Aenergy High GTX runs true to size.

1 reasons not to buy

  • Its toe box coming apart after merely tripping on a rock left one owner utterly disappointed.

Bottom line

Surprisingly light yet sturdy—this description is quite befitting of the T Aenergy High GTX. Being astoundingly breathable and comfortable also accurately describe this Mammut footwear. There is just one issue surrounding the boot that might make some people dismiss it straight away: the allegedly questionable construction of its forefoot zone. Nonetheless, when seen in a positive light, the T Aenergy High GTX can be easily considered a competitor in its class.


Updates to Mammut T Aenergy High GTX

  • The T Aenergy High GTX offers a solution to virtually every challenge trail and mountain hikers have. Its board-lasted upper has proper protection against the elements, thanks to Gore-Tex.
  • It is engineered with a Mammut-exclusive sole technology, called Rolling Concept. This patented tech is designed to support and cushion the foot during transitions, thus lessening the risk of ankle injuries and reducing movement fatigue.

Mammut T Aenergy High GTX size and fit

A high-cut hiker with a fairly true-to-size fit for men and women is the T Aenergy High GTX. It comes in half and whole sizes in regular width. Giving a no-bunching fit (especially around the instep) and allowing easy on and off is the shoe’s elastic Gore-Tex tongue. What offers a secure and personalized lockdown, on the other hand, is the proprietary Base Fit lacing technology with 2-zone function.


This Mammut boot is equipped with the Vibram Scale outsole for surface traction. It is capable of securing the user’s footing over different types of terrain thanks to its debris-shedding rib-like lugs arranged in a scale-like geometry. It is built with a heel brake—a hook-like feature that claws into steep terrain during descents. It is also engineered with a kind of contour that allows the foot to roll with ease.


Providing hikers with enough balance on rough terrain with as much cushioning and shock mitigation as possible is the footgear’s tapered midsole. It comes with a cushy wedge made of thermoplastic polyurethane, or TPU. Right on top of this sturdy yet springy component is the boot’s default insole for extra comfort underfoot.


The Mammut T Aenergy High GTX’s Hybrid Shell (a.k.a upper) is a combination of durable TPU and abrasion-resistant dropstop textile. It has a rubberized border for added protection. Gore-Tex’s Performance Comfort technology is imbued within its bootie, making the footwear waterproof yet breathable. The boot’s ankle, shin, and instep zones are padded with Memo Foam for an improved comfy fit.

Managing the fit is done through the Base Fit lacing system. Its entirety is comprised of metallic hardware (or eyelets) and round, synthetic laces.