The North Face Thermoball Traction Mules IV Mens - The Mens North Face Thermoball Traction Mules IV are a great choice for wear after a long day on the slopes. The durable and water-resistant Thermoball Traction Mules feature lightweight ThermoBall™ powered by PrimaLoft® insulation that retains warmth when wet. These North Face Mules were fashioned with durable, water resistant 100% recycled P.E.T. ripstop upper and have a cozy, Oso-fleece lining. The Thermoball Traction Mule bottom is made with 40% recycled-rubber sole for supreme traction and the collapsible heel with elastic side gore panels makes for easy on and off. Give your feet the comfort and warmth they need after a long cold day in The Mens North Face Thermoball Traction Mules IV.