The Yaktrax Thermal Insole, is heat rated to -13° F and has a Radiantex layer that redirects heat back to feet and keeps moisture out to help keep you warmer and drier longer. Polar white blended and recycled woolen felt for extreme warmth.

Benefits:

• Superior Thermal insulation
• Superb Cushioning
• Extraordinary wicking capabilities
• Maintains physical properties as it wears