Seirus Innovation Unisex Heatwave Sock Liner, Black, Large

Seirus Innovation Unisex Heatwave Sock Liner, Black, Large

• Four-way stretch sock
• Heatwave lining with kinetic heat return system
• Cut and sewn for a form fitting construction

The Series exclusive Heatwave sock features a kinetic heat return system. The first dual stage heating system for head, hands and feet. The revolutionary heatwave process converts emitted kinetic energy into increased heat that reflects radiated heat back for more warmth.