Northwave: Extreme RR 2 GTX

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• Carbon Light outsole in carbon fiber and glass fiber with 10.0 rigidity index 
• Duratherm water and windproof Gore-Tex® membrane ensures uncompromised sweat extraction and keeps the foot warm and perfectly insulated even in the coldest conditions 
• Upper with construction patented XFrame®, made with latest generation materials, transfers every watt of power by tightening the foot to the maximum and uniformly without any pressure point 
• Additional coating with specific materials for maximum heat insulation on the forefoot 
• Reinforced anti-abrasion rubber toecap 
• SLW2 rotor: the only one with step-by-step and complete release in a single button
• The Climaflex collar combines the extreme elasticity of the Gore-Tex Rattler® membrane with the high thermicity of the Neoprene, ensuring unprecedented mobility and protection 
• The integrated heel provides effective heel retention 
• The Arctic GTX insole with 4-layer construction with aluminum and batteries ensures excellent thermal insulation in synergy with the membrane 
• 360 ° reflective inserts

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