The Fox River Therm-A-Wick Sock Liners won’t add weight or bulk but retain heat and remove moisture with Fox River’s proprietary Wick Dry technology. The hollow core fibers of Thermolite heat up quickly and hold in heat.

• Smooth, flat-knit construction provides lighweight comfort
• Smooth, flat comfort toe seam
• Thermolite fibers heat up quickly and hold in heat
• Features Wick Dry technology for superior moisture management
• Contents: 55% Thermolite polyester, 44% nylon, 1% spandex