The Mar Linen Shirt in Navy from Knickerbocker, New York 

Details
The 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.

• 55% cotton, 45% linen, woven in Portugal. 
• Mother of pearl buttons.
• Made in Portugal.
• Wash on cold and air dry, or dry clean.