Outdoor Research Men's Tundra Slip-on Aerogel Booties

Slip-on puffy booties featuring PrimaLoftA(R) Aerogel Insulation; the thinner, lighter, stronger insulation trusted by NASA space travel. Snow camping, car camping, or hanging out in the cabin, these insulated puffy booties are irresistibly warm and comfy. Tundra Aerogel Booties feature a compression-resistant PrimaLoftA(R) Aerogel insert that acts as a thermal barrier between your feet and the elements, as well as a weather resistant exterior shell and grippy print on the sole. Insulated with VerticalX(TM) ECO, these offer a superior warmth-to-weight ratio that works even when wet. A collapsible heel can be worn up, or tucked away to convert booties into slippers. FABRIC : 100% Polyester Shell, VerticalX(TM) ECO 100% Polyester (85% Recycled) Insulation 200 G/M^2, PrimaloftA(R) Aerogel 1.5Mm Insert, 60% Polyurethane, 40% Polyester Soles, 100% Tricot Lining WEIGHT : 7.1 oz/201 g Features FABRIC PERFORMANCE Water ResistantWind ResistantInsulatedBreathableDurable DESIGN FEATURES Updated DesignAnkle Cinch TopAnti-Slip Sole ORIGIN Bangladesh Outdoor Research Slipper Bootie Size Chart How to measure Please refer to your shoe size. XS S M L XL MEN 7-8 8.5-9.5 10-11 11.5-12.5 13-14 WOMEN 5-6 6.5-7.5 8-9 9.5-10.5 11-12