Calvin Klein Boxy Twill Overshirt in Fossil, Size M. This overshirt offers a modern, sharp, and innovative style. Crafted from a soft, crisp cotton nylon twill fabric, it features a boxy fit, a pointed collar, and long sleeves. The design includes flap pockets at the chest, a buttoned placket, a straight hem, larger sized buttons, and the Calvin Klein monogram logo on the chest. Made with 71% cotton and 29% nylon. Model no. P-5595-492.