Same design and weight as our Double Layer Running sock except we substitute ThermaStat® in place of Dri-WRIGHT™.

• ThermaStat® is a hollow core polyester designed to trap air inside the fiber as an insulator to the outside cold elements
• Moisture management is another key element of Thermastat®, coupled with the Double Layer System ensures Blister Free performance in the cold temperatures

Fiber Content:
Inner Layer:
70% Thermastat®
30% Nylon

Outer Layer:
68% Thermastat®
28% Nylon
4% Lycra®
Sizes: S, M, L, XL