US Military ECWCS Light Weight Thermal Underwear

Features

1. Genuine USGI Issue — Official US Military ECWCS Generation III Level 1 silkweight base layer issued to American servicemembers.
2. Polartec Power Dry Fabric — High-performance polyester knit engineered to pull sweat off the skin and push it to the outer face for rapid evaporation.
3. Silkweight Construction — Ultra-thin, low-bulk fabric layers cleanly under uniforms, combat pants, or insulating mid-layers without bunching.
4. Anti-Microbial Treatment — Built-in odor control inhibits bacteria growth during extended wear in the field.
5. Four-Way Stretch — Knit construction moves with the body for unrestricted range of motion on patrol, on the move, or in the rack.
6. Layer 1 of the 7-Layer System — Designed to serve as the foundation of the Extended Cold Weather Clothing System for temperatures ranging from mild fall chill down through deep winter cold.
7. Flatlock Seams — Low-profile stitching reduces chafe and hot spots under load-bearing gear and pack straps.
8. Sand / Desert Tan Colorway — Issued neutral colorway wears discreetly beneath combat uniforms and civilian outerwear alike.
9. Quick-Drying Synthetic — Lightweight polyester dries far faster than cotton, keeping you warm even when output is high.