Based on MBDU shirt. Anatomic cut. Classic non-rolling collar Buttoned front with Canadian style buttons Expandable zippered chest pockets. Zippered upper sleeve pockets with loop fields for patches and glove friendly pull tabs Mesh panels in the armpit area. VersaStretch side panels. Hook-and-loop adjustable cuffs YKK zippers. UPF50 fabric. Material: 100% Polyester