The Under Armour Button Down Flannel for men in size SM features a blue and red plaid pattern, long sleeves, and a collared neckline with a button closure. Made from a polyester blend flannel fabric, this lightweight shirt is perfect for outdoor casual wear. It has a regular fit, breathable material, and convenient pockets. With its colorful and outdoor theme, this button-up shirt from Under Armour is a stylish and comfortable addition to any man's wardrobe.