A long-sleeve T-shirt is a type of shirt in the style of a T-shirt, which the original kind is short-sleeved, but with long sleeves. It has been an acceptable piece of fashion since the 1970s. Since the mid-1980s, it has often been worn underneath a short-sleeved T-shirt for a nice-looking, warm combination. That style is typically done in the fall and winter. Sleeve Types • Hanging sleeve, a sleeve that opens down the side or front, or at the elbow, to allow the arm to pass through (16th century)...