A sweatshirt is a long-sleeved pullover shirt or jacket fashioned out of thick, usually cotton, cloth material.[1][2] Sweatshirts are almost exclusively casual attire and hence not as formal as some sweaters. Sweatshirts may or may not have a hood. A sweatshirt with a hood is now usually referred to as a hoodie, although more formal media still use the term "hooded sweatshirt".