The product is a Nike men's XL black t-shirt featuring the San Francisco Forty Niners #13 Brock Purdy. Made of cotton, this short sleeve shirt with a crew neck is machine washable and part of the Nike brand. The shirt is designed for a regular fit and is perfect for wearing during the summer, fall, and spring seasons. It is a stylish and colorful addition to any man's wardrobe, showcasing team spirit and a touch of Nike's signature style.