The product is a men's size XL grey T-shirt designed for the San Diego Rock 'N' Roll Marathon in 2024. Made from polyester, the shirt features a solid gray color with a round neckline. It is machine washable and has a regular fit, perfect for those who enjoy running and want to show their support for the event. The Sport-Tek brand ensures quality and durability, making this T-shirt a great choice for any marathon enthusiast.