With its impressive 200g Primaloft® Gold insulation the NORTHWAVE Magma XC Core will keep you warm in extreme cold conditions. The combination of an Arctic 4Layer insole (EVA/Aluminum/EVA/Pile) and the Lasting Board Thermal Shield (EVA/Aluminum) will also see to that end. This XC shoe offers extreme grip on any surface and its Jaws Carbon Reinforced sole (stiffness index 8.0) ensures the transfer of every watt of energy. The NORTHWAVE Magma XC Core uses the most innovative materials which let it wrap the foot without any pressure points, while your heel won’t ever want to leave its comfortable seat.