The Outdoor Research Astroman Air Shirt is a men's short sleeve button-up shirt in size Large. It features a solid gray color and is made of a lightweight and breathable nylon and spandex blend fabric. The shirt has a collared neckline with a button closure and a regular fit, making it suitable for casual occasions and outdoor activities like hiking. It also includes accents like buttons, pockets, and moisture-wicking properties for added functionality. Perfect for the summer season, this shirt is machine washable and quick to dry, making it a practical and stylish choice for the outdoors.