Description O ur Mar Shirt combines the design of a classic mechanic's work shirt with high-quality cotton and linen fabric, accented by mother - of - pearl buttons. Featuring two large chest pockets, vented side seams and a double back yoke detail. Details 55% cotton, 45% linen, woven in Portugal. Mother of pearl buttons. Made in Portugal. W ash on cold and air dry, or dry clean. Size Chart For information on how to measure please visit our FAQ page. Tag Size XS S M L XL XXL Chest 41.5 43.5 45.5 47.5 49.5 51.5 CB Sleeve Length 18.75 19.25 20 20.75 21.25 22 HPS Length 26.5 27.25 28 28.75 29.5 30.26