Hunters Specialties Men's Lightweight Base Layer Shirt 95% Polyester/ 5% Metallic (Silver-Nylon) Imported Odor Control Engineered with state-of-the-art permanently bonded silver for unmatched odor control Odor Control Engineered with state-of-the-art permanently bonded silver for unmatched odor control|Perspiration Management Breathable Quickly leaves the hunter dry & comfortable|Thermal Properties Keeps you warm when it's cold and cool when it's hot|Comfort feels like silk|