The insulated upper with a thermal lining on the instep ensures warmth in extreme cold and breathability at the same time. Insulated collar for greater comfort and warmth. The tapered heel construction helps to cushion the impact and increase overall stability. The 3D shaped insole wraps the foot and ensures greater comfort when stepping. The ultra-flexible UA HOVR+ cushion absorbs shocks, returns energy and helps you get ahead. Lightweight EVA foam ensures an extremely soft landing with great energy return. Rubber outsole designed to combine durability and light rebound where needed.