The REI Co-Op Flannel Shirt in Men's size M features a classic blue and gray buffalo check pattern made from 100% cotton flannel. This button-up shirt has long sleeves, a collared neckline with a spread collar style, and a regular fit. It is perfect for casual occasions and includes pockets for added convenience. Ideal for outdoor activities in the winter, fall, and spring seasons, this shirt combines practicality with a stylish design, making it a versatile addition to any man's wardrobe.