Outdoor Research Tundra Aerogel Sock

Your favorite Aerogel bootie warmth, now in a slip-on sock design. The Outdoor Research Aerogel socks keep your feet extra toasty inside of your sleeping bag-or you can wear them around the cabin. Insulated with NASA-approved 133 g PrimaLoft Gold synthetic fibers with Cross Core Technology Exterior shells are breathable and water resistant Ankle cinch tops Anti-slip, microsuede soles are just durable enough for plodding around indoorsImported.Technical SpecsBest UseCampingFootwear HeightOver-the-ankleFootwear ClosureSingle-pull LaceUpperPolyesterLiningTricotInsulation133 g PrimaLoft Gold synthetic fibers with Cross Core TechnologyMidsolePolyester suedeOutsolePolyester suedeGenderUnisexOutdoor Research Slipper Bootie Size ChartHow to measurePlease refer to your shoe size. XSSMLXLMEN7-88.5-9.510-1111.5-12.513-14WOMEN5-66.5-7.58-99.5-10.511-12