EXCLUSIVE AT MR PORTER. If you’re looking forward to the warmer months as much as we are, then there’s nothing like a striped shirt to welcome the new season. Our Mr P. version is cut from crisp cotton-blend poplin and has a classic camp collar and boxy cut. Pick one of the four shades and match it to your trousers or shorts. Shown here with Mr P. trousers, Mr P. sneakers, Mr P. socks, Le Gramme cuff. Explore the world of Mr P. – – Navy, white, indigo and brown cotton-blend poplin – Camp collar, chest patch pocket – Button fastenings – 52% cotton, 48% viscose – Machine wash – Imported- For Men.