Description

Ultimate merino wool performance with expanded heat under and over the toes. Left/Right over the calf design fits all type of boots, delivering hours of comfort and warmth. Premium performance and heat when you need it most. 

Features: 

• 60% Merino Wool, 31% Nylon, 8% Polyester, 1% Spandex
•  Sweatsheer Moisture Wicking 
• Odorsheer Anti-odor control 
• Fits well in Snow boots 
• Over the calf length 
• L/R Design Compression in key areas 
• Arch Support Heel and toe reinforcement 
• No slip features Heat under and over the toes 
• Comfort Contour 
• Bluetooth Battery 
• Up to 11 hours of heat 
• USB Charging Input