The perfect undergarment for cooler weather features 4-Direction Stretch? comfort; 62% nylon, 30% silver nylon and 8% spandex; S3 antimicrobial technology; moisture-wicking design, and strategically placed support panels with added spandex for extra mobility. Color: Gray/Black. Machine wash. Imported. Features: 4 Direction Stretch? comfort 62% Nylon, 30% Silver Nylon, 8% Spandex S3 Silver Shield Science to aid in odor control Wicks moisture away from body Seamless construction for added comfort in high friction areas Strategically placed support panels in arms Spandex added for additional stretch and comfort S3? Silver Shield Science?: Controlling Odor at the Point of Contact: S3? works at the point of contact inhibiting odor-causing bacteria. S3 protection lasts for the life of the garment. When used in conjunction with ScentBlocker?, S3 will extend the in-field absorbing life cycle of the suit. Odor Reducing - Keeps the garment smelling fresher and reduces human odor by preventing odor grown in the fabric itself Carbon Benefit - Extends the in-field absorption capability of the suit by reducing the amount of odor it has to absorb Long-Lasting Benefits - S3 protection is permanently affixed to the garment and not affected by laundering Manufacturer style #: SILMIDS.