PolartecTM reigns supreme for cold winter runs. It differs from other types of insulation by trapping air heated by your body in cold conditions and keeping it there, while being light enough to retain quick-drying properties suitable for high-intensity travel in winter conditions. . It is designed specifically to keep you warm and dry.
This upper combines PolartecTM with strategically placed ripstop nylon arm patches that fortify quick-dry properties, decrease weight and increase ventilation. And unlike conventional insulation, this top traps dry heat, eliminating that hot cold, even when you stop moving.