Brand: 32 Degrees. Style: Mens 32 Degrees HEAT long sleeve thermal undershirt with crew neck; 2-pack base layer tops. Color: Black/black. Size: Mens Small as indicated on the retail package. Material and care: 40% polyester, 34% acrylic, 22% rayon, and 4% spandex; machine wash cold with like colors on gentle cycle, use mild detergent, tumble dry low, and do not dry clean. Country of origin: Made in China. Fabric and construction: Lightweight stretch knit thermal fabric designed for a close-to-body fit and comfortable layering under shirts, sweaters, or outerwear. Design details: Classic crew neckline, long sleeves, and solid color styling for versatile everyday wear. Features: Heat retention to help retain body warmth, soft hand feel from the blended yarns, quick-dry moisture wicking to keep you dry, stretch comfort for ease of movement, and anti-odor technology to help minimize odor from perspiration. Measurements: Manufacturer size chart lists chest 34-36 inches for size Small. Product identifiers: Item #1307814, WPL 11590, Lot #T219529, and UPC: 192166200422. Includes two long sleeve undershirts only; additional accessories are not included.