Thermal Insole

Built for cold-weather miles, the Thermal Trail Insole is our pick for hikers and trail runners who refuse to let winter shut them down. A thermal radiant barrier blocks cold from the ground up while reflecting your own heat back to your foot, and a wool-blend topsheet handles moisture so your feet stay dry and warm all day.

• Thermal radiant barrier with built-in foil layer reflects foot heat back while blocking cold creep from frozen ground
• Wool-blend topsheet delivers natural insulation and moisture management without bulk — warm and breathable mile after mile
• Triple-density EVA construction with anatomical arch support and deep heel cup keeps your foot in a neutral, stable position
• ACT foam pods in the heel and forefoot absorb impact on hard-packed snow, ice, and frozen trail — all-day cushion without fatigue
• Trim-to-fit design drops into virtually any winter boot or hiking shoe, plus antimicrobial treatment keeps odor from building up over a long season