Our original flagship design but updated with a new more flexible breathable ink. A perfectly stretchy comfortable tri-blend ringspun cotton blend. This is the shirt that started it all, featuring a classic Mark-5 diving helmet. The Mark-5 was used by divers from the late 1800’s until the 80’s. This look, now in olive and maroon works well with an adventure out on the town or at sea! Grab our newest addition today!