The perfect cold-weather slip-on. ThermoBall™ Eco insulation, a water-resistant upper, and Oso-fleece lining make The North Face Traction Mule V a winter essential. A 100% recycled P.E.T. ripstop upper offers durability for long-time wear. ThermoBall™ Eco insulation and Oso-fleece lining provide a warm and cozy fit. Collapsible heel with elastic side panels means easy on and off. A 40% recycled rubber outsole provides traction on a variety of surfaces. 9.5 oz. (women's size 7).