The Patagonia Men's Large Blue Red Plaid Button-Up Flannel Shirt is made from organic cotton flannel, making it a cozy and sustainable choice for the colder seasons. This shirt features a classic collared neckline, long sleeves, and a button closure for a stylish and casual look. The blue and red plaid pattern adds a pop of color, while the regular fit and size make it a versatile piece for everyday wear. Perfect for outdoor activities or simply relaxing in style, this shirt is a must-have for any man's wardrobe.