• Heat Fusion heating elements built into the sock for easy attachment of the S-Pack battery
• Heel and toe reinforcements
• Shin, calf and instep protection
• Ventilated arch for moisture wicking
• Elastic band for ankle support
• Specific left and right foot construction for a good fit on the foot
• Knee height

Materials :

• 40% acrylic
• 28% polyamide
• 17 % wool
• 7 % polyester
• 6 % polypropylene
• 2 % elastane