Thermal Base Layers

U.S. Issue Level 1 Silk Weight Thermal Bottom The U.S. Silk weight Thermal Bottom is a base layer that is designed to wick moisture while providing warmth. Designed as Part of the ECWCS (Extended Cold Weather System) for the military as a base layer...

FROG XGO Grid Fleece Thermal Pant   The USMC Grid Fleece Thermal Pant know as F.R.O.G. (Flame Resistant Organizational Gear) is a standard issue mid layer thermal bottom that will keep your warm while being highly breathable with...

USMC XGO FROG Grid Fleece ThermalPullover Top The USMC Grid Fleece thermal top known as F.R.O.G. (Flame Resistant Organizational Gear) is a standard issue mid layer thermal shirt that will keep you warm while being highly breathable with no-drip,...