Looks like a traditional button-down shirt --- but look closer! Faux buttons disguise a hidden zipper closure...a feature utilized for years by law enforcement professionals. Bottom is hemmed with side vents for a trim look and quick access to a holstered sidearm. Vented, bi-swing back is mesh lined to minimize printing and provide you with maximum air flow and freedom of movement. Two side-bellows chest pockets close securely with hook and loop fasteners. 5.5 oz. cotton is fade resistant, pre-washed, pre-shrunk, and treated with DuPont Teflon® fabric protector. Reinforced elbow, adjustable, two button cuffs, underarm vent holes, a sleeve pen pocket and durable melamine buttons round out the package. Imported.