Your feet work hard, so they deserve the warmth and comfort of the Women’s ThermoBall™ Traction Mule V. This shoe combines ThermoBall™ Eco insulation with a high-traction rubber outsole to make a slip-on that’s ideal for base camp, après ski or shuffling out to grab the morning paper. The North Face Thermoball Traction Mule V Slip Ons Women's Features & Specifications: - Upper: Recycled P.E.T. ripstop upper with a non-PFC durable water-repellent (non-PFC DWR) finish for added water repellency - ThermoBall™ Eco 100% recycled polyester insulation helps keep feet warm even when wet - Oso fleece collar lining for comfort - Collapsible heel with elastic side panels for easy on/off - Sole Unit: Outsole made with up to 20% recycled rubber - Approx Weight ( ½ Pair): 7.1 oz (201 g)