Tests & reviews

Mammut - Mercury IV Mid GTX - Walking boots tested

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This is what customers from around the world say:

Franz-Josef
19.11.2022

87% have found the reviews
by Franz-Josef helpful

  • Advantages
    Good grip
    Comfortable
    Waterproof
    Finish
    Stabilizes the foot
Hille
06.11.2022

100% have found the reviews
by Hille helpful

  • Advantages
    Lightweight
    Comfortable
    Waterproof
    Price / performance
    Stabilizes the foot
Andre
17.10.2022

100% have found the reviews
by Andre helpful

  • Advantages
    Price / performance
    Finish
    Comfortable
    Lightweight
    Waterproof
    Breathable
Sabine
15.07.2023

100% have found the reviews
by Sabine helpful

  • Advantages
    Robust
    Finish
    Lightweight
    Comfortable
Ralf
16.12.2022

83% have found the reviews
by Ralf helpful

  • Advantages
    Good grip
    Comfortable
    Lightweight
    Finish
Ivo
13.01.2024

100% have found the reviews
by Ivo helpful

  • Advantages
    Robust
    Good grip
    Waterproof
    Price / performance
    Comfortable
    Finish
    Lightweight
    Stabilizes the foot
Zoravar Singh
23.10.2023

100% have found the reviews
by Zoravar Singh helpful

Great shoes, with ultra grippy outsoles

First time trying Mammut, will be buying boots from them in the future. The fit is similar to salomon - snug without pressure points. The smaller shape allows for great stability, allows me to sprint on uneven terrian with confidence, never had that experience with a pair of boots! I would not suggest sizing up. I bought according to size and I can wear them with thick winter socks.
The leather comes in a matte finish, I treated it with saphir creme, although you could use a non-oxidising oil such as jojoba. This created a shiny finish and deepned the color. It also preserves and waterproofs the leather without needing to use silicone sprays all the time. Stronger leather preservation can be acheived with a wax such as greenland wax warmed over a flame and rubbed into the shoe.

  • Advantages
    Stabilizes the foot
    Comfortable
    Good grip
    Robust
    Waterproof
    Lightweight
    Finish
    Price / performance
Matthias
29.01.2023

100% have found the reviews
by Matthias helpful

  • Advantages
    Waterproof
    Breathable
    Durable
    Finish
    Stabilizes the foot
    Good grip
    Price / performance
    Comfortable
    Lightweight
    Robust
Gerhard
08.08.2022

100% have found the reviews
by Gerhard helpful

  • Advantages
    Price / performance
    Finish
    Waterproof
    Comfortable
    Good grip
    Lightweight
Elke
15.06.2024

80% have found the reviews
by Elke helpful

  • Advantages
    Waterproof
    Breathable
    Stabilizes the foot
    Lightweight
    Good grip
    Comfortable
    Robust
    Finish
Ernst
11.07.2023

100% have found the reviews
by Ernst helpful

  • Advantages
    Stabilizes the foot
    Robust
    Finish
Rudolf
23.10.2022

  • Advantages
    Waterproof
    Finish
    Breathable
    Comfortable
    Robust
    Stabilizes the foot
eva
10.02.2023

  • Advantages
    Robust
    Good grip
    Finish
    Comfortable
    Lightweight
    Price / performance
    Stabilizes the foot
    Waterproof
Michael
12.06.2023

  • Advantages
    Good grip
    Waterproof
    Comfortable
lampros
10.12.2023

Product images by lampros
  • Disadvantages
    Not waterproof
Simone
09.08.2025

  • Advantages
    Good grip
    Lightweight
  • Disadvantages
    Not robust
Michael Ulrich
11.07.2025

  • Advantages
    Waterproof
    Good grip
    Finish
    Price / performance
    Comfortable
Jochem
15.06.2025

  • Advantages
    Robust
    Finish
    Good grip
    Price / performance
    Lightweight
    Stabilizes the foot
    Waterproof
    Comfortable
Arnulf Feuerstein
19.02.2025

Product images by Arnulf Feuerstein
  • Advantages
    Good grip
    Lightweight
    Comfortable
    Price / performance
    Waterproof
  • Disadvantages
    Causes blisters
    Not waterproof
Frank
22.11.2024

  • Advantages
    Price / performance
Eoin
11.11.2024
very comfortable boots

waterproof as long as you treat them right after use so wash of acidic bog water and every 5/6 uses in bad weather retreat the leather. boot construction great two points to note though, the insoles are cheap so id assume most the budget went into the boot construction and the toe cap could do with a bit tougher leather but thats only if youre pushing them through rocky steep hikes often.

  • Advantages
    Good grip
    Waterproof
    Comfortable
    Price / performance
    Lightweight
    Breathable
Sonja
04.11.2024

  • Advantages
    Durable
    Comfortable
    Stabilizes the foot
    Robust
    Waterproof
    Finish
    Lightweight
    Good grip
catherine
30.10.2024

  • Advantages
    Breathable
    Comfortable
    Good grip
    Lightweight
    Finish
    Robust
    Durable
    Stabilizes the foot
    Price / performance
  • Disadvantages
    Not waterproof
Samuel
15.09.2024

  • Advantages
    Waterproof
    Lightweight
    Price / performance
    Comfortable
Vincent
16.08.2024
Repeat purchase

Very happy to repeat purchases of these very good shoes

  • Advantages
    Breathable
    Good grip
    Durable
    Comfortable
    Robust
    Stabilizes the foot
  • Disadvantages
    Not waterproof

There are 35 more threads!