R13 Drop Neck Workshirt in Navy & Green Plaid - Navy. Size S (also in M, XS). 100% cotton. Machine wash cold. Front button closure. Midweight flannel fabric. Shirttail hem. R13-WS417. R13WR015-R935B. About the designer: Since its debut in 2009, R13's avant-garde denim silhouettes have garnered a cult status among those aiming to capture the rebellious American spirit. To achieve a vintage feel that doesn't warp or stretch, R13 uses Italian and Turkish denim produced in Italy, which features pure indigo casting along with machine hand washing techniques. The look is sharp and edgy, fit for the person who is effortlessly cool and fashion forward in their style.