The U.S. Silkweight 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 or lighter weight thermal shirt during colder days. PolarTec has always been a trusted material and brand keeping you dry while providing warmth. Easy to layer and give you option as the temperature and your activity changes.

Features & Specs

• Silk weight PolarTec Material
• Highly Breathable, Fast Drying Next-to-Skin Level
• Insulates and Stays Dry in Cool Weather
• Top has thumb Holes to aid Multiple Levels
• Contoured Long shirt tail
• Generation III ECWCS
• First ECWCS layer to keep you dry and warm
• Made in U.S.A.
• Polartec or Milikin Military contractor
• NSN: 8415-01-538-8472