Verdict from 100+ user reviews

6 reasons to buy

  • The Mammut Mercury III Low GTX has been applauded by a number of owners for having an intensely grippy Vibram outsole.
  • This promising shoe-type hiker is considered a wise investment by some. 
  •  A user has praised the footgear’s superb stabilizing capability.
  • Its extreme lightness has floored a wearer completely.
  • An owner finds the men’s Mammut Mercury III Low GTX hiking shoe an excellent product in terms of waterproofing.
  • The shoe’s overall craftsmanship has deeply impressed a hiking enthusiast.

1 reason not to buy

  • One of the people who reviewed the Mercury III Low GTX rants about the gear’s stiffness.

Bottom line

Being geared up with the Mammut Mercury III Low GTX means being seen in a superbly lightweight hiking shoe. Wearing one also translates to covering trail miles with incredible surface grip and ground stability. The only downside to this pretty valuable product, however, is its allegedly stiff-as-a-board construction. To sum up, the Mercury III Low GTX is one Mammut product that has the potential to be the next go-to hiking footgear of many—especially once it softens up a little bit.

Tip: see the best hiking shoes.

Good to know

  • The Mammut Mercury III Low GTX is a board-lasted footgear designed to give hikers a combination of comfort and protection on the trail. It can withstand abrasions and wear and tear thanks to its critical zones having been imbued with Liquid Rubber reinforcements.
  • Its rockered sole unit, which consists primarily of the shoe’s sturdy midsole and Vibram outsole, is engineered with Rolling Concept. This Mammut-patented technology, which is also found in the T Aegility Low GTX and the T Aenergy Low GTX, assists the foot during transitions, thereby making every stride less tiring. Its presence also prevents ankle-related injuries.
  • The grounded look of the Mercury III Low GTX may be exclusively linked to its Terracare leather upper. Just like its predecessor, it is lined with a Gore-Tex membrane for water protection. The apparent change in the upper is the design on the overlay. It is less pronounced than the one seen in its precursor.

Mammut’s Mercury III Low GTX is a relatively true-to-size, low-top day hiking shoe for men. It is built for wearers with standard-width feet. Its sizing selection consists of half and full sizes. Users may customize its fit using the hiker’s ghillie lacing.

This waterproof hiking shoe from Mammut gets to provide adequate footing security over various types of terrain with its Vibram outsole with Frog Grip technology. Hardwearing hexagon protrusions (also known as lugs) dot its surface, allowing users to gain and maintain grip in practically every direction. It is engineered with horizontal grooves at the forefoot to allow the shoe to flex with every stride. It also comes with a low-profile heel brake for improved maneuverability during tricky descents.

The Mercury III Low GTX has a stout yet cushy midsole for underfoot protection, comfort, and stability. It is capable of mitigating shock on impact with its thickly constructed heel zone. Its cupped design gives the shoe enhanced sturdiness and support.

Sitting right on top of this springy unit is the footgear’s removable insole. Mammut engineers gave it a contoured build to up the shoe’s underfoot support. They also furnished it with enough padding to provide wearers with extra cushioning.

The low-cut upper of the Mammut Mercury III Low GTX is made of nubuck leather from a proudly German brand, called Terracare. Its bootie has the Gore-Tex Performance Comfort technology, which makes the hiking shoe breathable enough on the inside while sufficiently waterproof on the outside. The parts that hug the user’s ankle are moderately lined with cushy padding for additional in-shoe comfort. Its lacing system is made up of a synthetic lace and combination eyelets.


How Mammut Mercury III Low GTX ranks compared to all other shoes
Bottom 19% hiking shoes
All hiking shoes
Bottom 12% Mammut hiking shoes
All Mammut hiking shoes
Bottom 20% day hiking hiking shoes
All day hiking hiking shoes


The current trend of Mammut Mercury III Low GTX.
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Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.