The Topo Designs Mountain Shirt is a versatile and stylish men's button-up shirt made from organic cotton flannel in a classic black and white plaid pattern. Featuring a collared neckline, long sleeves, and a regular fit, this shirt is perfect for outdoor activities, classic workwear, and everyday casual wear. With breathable fabric and all-season capability, this shirt is practical and comfortable for year-round wear. The addition of pockets and a button closure adds both functionality and style to this timeless piece from Topo Designs. PLEASE SEE MEASUREMENTS. SHIRT TAG SAYS A LARGE BUT IT MEASURES CLOSER TO A MEDIUM.