The mark consists of a black circle with the word "KEYSTONE'S" contained inside in uppercase letters, centered and curved across the top and surrounded by a curved line that bends toward the word "MAC", with an uppercase "M" and lowercase "ac" in script lettering across the center of the circle, the word "SHACK" in uppercase italic sans-serif letters below "MAC" and slightly to the right of center, and the words "MAC + CHEESE BAR" in uppercase letters of a smaller size, curved at the bottom inside the circle and surrounded by a curved line that bends toward the word "SHACK" on the left.