AKU Viaz Dfs GTX

43
Ratings
BrandMore from AKU
Test reportsVery good based on 3 tests
Delivered between Wed, 24.12. and Tue, 30.12.
Only 3 pieces in stock at third-party supplier
Supplied by
free shipping

Size7

Product details

Durable mountain shoes for alpine challenges. The Viaz DFS GTX sets a new standard for versatile shoes designed for technical and fast mountaineering, demanding hiking, and via ferrata. They are an evolution of the AKU predecessor model Viaz and feature Dynamic Fit technology, which allows the tension in the heel area to dynamically adjust to your steps, enhancing comfort and stability. The AKU Dual Fit System (DFS) technology enables you to change the fit between walking and climbing modes. The Vibram Croda Litebase sole offers stability, grip, and precision, even in the most technical situations. The waterproof, breathable GORE-TEX lining protects your feet from moisture and ensures a comfortable wearing climate. Key features at a glance: abrasion-resistant mountain boots for alpine tours, Dual Fit System provides an ideal fit, GORE-TEX membrane protects against moisture.

Key specifications

Exact colour description
Black / Orange
Colour
Black
Target group
Men
Shoe size (EU)
43
Item number
31308956

General information

Manufacturer
AKU
Category
Hiking boots
Release date
8.3.2023
Sales rank in Category Hiking boots
684 of 12747

Colour

Colour
Black
Exact colour description
Black / Orange

Material

Material group
Plastic
Main fabric material
Polyester
Upper
Fabric, Polyester, Polyurethane
Sole material
Carbon, EVA, Polyurethane, Rubber
Material inner lining
Polyamide, Polyester, Synthetic
Material
Synthetic

Target group

Target group
Men
Age group
Adults

Shoe properties

Shoe size (EU)
43
Sport
Climbing, High tours & expeditions, Mountaineering
Membrane
Gore-Tex
Fabric properties
Breathable, Waterproof
Shoe sole technology
Gore-Tex Performance Comfort
Fastener
Lace fastening

Origin

Country of origin
Italy

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Weight
1090 g

30-day right of return and free return shipment
24 Months Warranty (Bring-in)

Compare products

Goes with

Reviews & Ratings

Warranty score

How often does a product of this brand in the «Hiking boots» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • AKU
    Not enough data
  • 1.Dolomite
    0 %
  • 1.Quechua
    0 %
  • 1.Trollkids
    0 %
  • 1.Xero Shoes
    0 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • AKU
    Not enough data
  • 1.Mammut
    1 day
  • 2.Merrell
    3 days
  • 3.Scarpa
    4 days
  • 4.La Sportiva
    5 days

Return rate

How often is a product of this brand in the «Hiking boots» category returned?

Source: Digitec Galaxus
  • 5.Lowa
    21.1 %
  • 6.Quechua
    22.3 %
  • 7.AKU
    22.8 %
  • 7.La Sportiva
    22.8 %
  • 9.Merrell
    24 %
Source: Digitec Galaxus

Translation: machine translated
Overall ratingVery good100/100
Very good100/100
outdoor Logo
Rank 1 out of 10outdoorBergstiefel im TestReleaseSeptember 2025

The Aku Viaz DFS, developed for rocky tours in the high mountains, is a great success: it shines with top climbing performance and is still very comfortable to wear. Thanks to the ultra-stiff, edge-stable but sensitive sole and snug-fitting shaft, you can climb the trickiest walls with dancing grace...

Without ratingNo rating
Bergsteiger Logo
BergsteigerBergschuhe im TestReleaseJuly 2025
  • PositiveSnow grip & ground feel
  • NegativeLess grip on paths

The ice and alpine touring boot with top fit and additional forefoot traction has a grippy sole with top front kick and super snow repellence in the snow. The shaft is very flexible. Precise on rock, but less grippy at the front

This test report belongs to a different type: Viaz Dfs GTX (42)
Go to complete test report
Very good100/100
outdoor Logo
Rank 1 out of 26outdoorMultifunktions- und Leichtwanderschuhe im TestReleaseDecember 2024

Developed for alpine tours, the Aku Viaz DFS shines with maximum climbing performance and amazingly high wearing comfort. Thanks to the ultra-stiff but sensitive sole and snug-fitting shaft, you can climb the trickiest walls with dancing grace. The forefoot, which can be laced separately with a quick-release fastener, is also very impressive. Price: 350 euros.

This test report belongs to a different type: Viaz Dfs GTX (42)
Go to complete test report