Winter weather can't keep you inside. These natural running shoes have a knit upper that's designed to trap heat and a water-repellent finish that protects against icy splashes. A high collar provides protection against the elements, and the all-terrain outsole helps keep footing secure on a variety of surfaces. Endless energy Boost is our most responsive cushioning ever, delivering incredible energy return: The more energy you give, the more you get Unbeatable traction All Terrain outsole works like winter tyres for your feet