During the Korean and Vietnam Wars, soldiers feet were kept warmer and drier with the use of mesh insoles, and armies today continue to use them
The mesh insoles create an airspace between the foot and footwear, enabling air to circulate around the foot. This characteristic keeps the foot warm and dry in winter, cool and dry in summer.
Two layers of fine plastic screening are crinkled between three layers of smooth screening. All layers are then cemented together along the edge to create a thermal mesh insole suitable for most footwear from ski boots to rubber boots to shoe pacs with liners.
Completely washable with warm mater and soap.