The Macintosh coat has been around for so long—since 1823 to be exact—that it can possibly be classified as the original waterproof outerwear. To this day, the no-frills design remains the same and the jacket still sells like hot cakes. Mr. Porter visited the Macintosh brand's factory floor to see how each coat is painstakingly made. You can see that all the details are hidden in the construction. Check out the video above. [mrporter]