Viaz DFS GTX redefines a new standard of multipurpose footwear for technical and fast mountaineering, demanding hiking and via ferratas. Evolution of the historic Viaz model by AKU, it uses Dynamic Fit technology that allows you to dynamically adapt the heel tension to your step, with improved comfort and stability. The Vibram Croda Litebase sole (with Durastep colored compound) offers stability, grip and precision, even on the most technical passages, allows the use of traditional or semi-automatic crampons. It adopts the AKU Elica Natural Stride System to promote biodynamic efficiency. The exclusive AKU Dual Fit System (DFS) technology allows you to vary the fit in walking & climbing mode.

UPPER: AIR8000® WELDED PU FILM
UPPER PROTECTION : RUBBER BANDER LINING : GORE-TEX® PERFORMANCE COMFORT
OUTSOLE: VIBRAM® CRODA LITEBASE
MIDSOLE: DOUBLE DENSITY PU
LASTING FOOTBOARD (STIFY): 6-4 MM NYLON CARBON FIBER DIE CUT EVA (STIFF)
FOOTBED: CUSTOM FIT
MEN'S WEIGHT (GR. ½ PAIR): 658
MEN'S SIZES (UK): 7 - 13