Classic Fit , 65% Polyester for durability, and 35% Cotton for comfort , 245gsm drill fabric , Mandarin collar , Double breasted , 10 interchangeable buttons , Pen pockets on sleeve. Colours: Black, White, White/Black Piping. Sizes: S, M, L, XL, 2XL, 3XL, 2XS, 4XL, XS