The Extreme Cold Weather Clothing System, or Gen-III ECWCS is a protective cold weather clothing system created originally by the United States Army
Tru-Spec 2073 Gen-III ECWCS Level-2 Bottom, Thermals, Black
Tru-Spec Men's Base Layers Series Gen-iii ECWCS Level-2 Bottom
Rothco ECWCS Gen III Mid-Weight Underwear Bottoms (Level II)
Clothing and Equipment for Cold Weather and Mountain Operations. - ppt download
UA Base 4.0 is a men's baselayer built for extreme cold weather and lower activity.
Base 4.0 Crew
Extended Cold Weather Clothing System, Tactical Experts
Shop Military ECWCS Gen III Level II Underwear Tops - Fatigues Army Navy
GEN-III ECWCS LEVEL-2 BOTTOM – Arocep
Rothco ECWCS Gen III Level II Mid-Weight Underwear Breakaway Bottoms
US Military, ECWCS
Tru-Spec Gen3 ECWCS Level 1 Top