The Sun River Men's M Blue Denim Flannel Lined Button-Down Long Sleeve Shirt is a versatile and stylish option for men looking for a casual yet workwear-appropriate shirt. Made from a blend of polyester and cotton, this solid blue shirt features a collared neckline, button closure, and long sleeves, perfect for a casual or workwear occasion. The flannel lining adds a touch of warmth, while the denim fabric type gives it a rugged edge. With accents like pockets and a button-down collar style, this shirt from the Sun River brand is a classic addition to any man's wardrobe.