This is a gray men's button-up shirt from 5.11 Tactical in size M. It features a collared neckline with a button-down collar style and long sleeves. The shirt is made of breathable woven cotton fabric, suitable for summer, fall, and spring seasons. With a chest size of 42 inches, it includes pockets and button accents, making it ideal for travel, casual wear, and workwear in outdoor or classic-themed settings.