The Flash Arctic GTX is equipped with a NRG Air Carbon Reinforced sole with a stiffness index of 8.0. The water- and windproof Gore-Tex® Koala membrane keeps your feet perfectly insulated and warm even at -10°C. It offers an ultra-snug fitting upper with BioMap Aero Overlap construction which reduces aerodynamic drag. The Flash has an extra thermal coating strategically placed on the toe and TPU reinforcement on tip.

More features:

• NRG Air Carbon Reinforced sole with a stiffness index of 8.0
• The water- and windproof Gore-Tex® Koala membrane keeps your feet perfectly insulated and warm even at -10C
• Ultra-snug fitting upper with BioMap Aero Overlap construction reduces aerodynamic drag
• Extra thermal coating strategically placed on the toe
• TPU reinforcement on tip
• SLW2 dial: the only one with step-by-step and full release in a single button
• The Climaflex collar made of extremely elastic Gore-Tex Rattler® membrane and highly insulating Neoprene delivers unprecedented mobility and protection from the weather
• Integrated heel system ensures efficient heel retention
• The Arctic GTX footbed with a four-layer aluminium and fleece construction works with the membrane to deliver outstanding warmth and insulation
• 360° reflective inserts