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The HotSox use the AERIS 1000 (1” / 25mm of loft) technology, a revolutionary patented insulation Technology that keeps you warm, even if it gets wet!
Just like the Classic Pant and Jacket, the Hotsox are Designed using the Polyester Mesh lining that helps pull moisture and sweat away from the body. The outer fabric is a wind resistant Polyester Micro Rip-Stop Taffeta with a DWR (Durable Water Repellent) finish which repels light rain and snow and decreases dry times. HotSox will keep your feet and toes warm and comfortable from -35°F to 50°F (when worn with the Classic pant & jacket). This unique footwear can be used as a slipper around the house or inside a boot as a liner. A lot of our customer even use them camping!

Sizing Chart Link: https://13rs3v3usza62fg2iihnnvjc-wpengine.netdna-ssl.com/wp-content/uploads/2017/10/Updated-Sizing-Chart-10-26-17.pdf

Please note! Sizes are in inches, not regular shoe sizes. We get a far better fit by sizing this way. Measure your foot from ‘back of the heel’ to the end of your longest toe. We suggest that you go UP 1/2 inch from the size you measure on the tape, for comfort.