The mark consists of a circle outlined in white and containing an image of the Zakim Bridge in gray, gold and blue with the Boston skyline in black, brown, tan, gold and green in the background and covering the lower half of the circle. On the top of the image of the Zakim Bridge is a small purple light. The sky above the Boston skyline has four strips of blue across the image with navy blue on top, a strip of royal blue, a strip of baby blue and then a strip of powder blue on the bottom. Going from left to right at a slight upward angle in the center of the circle and written in white stylized script is the word "SHUFFLE". Directly below is the stylized wording "BOS" with a small gold circle containing a white uppercase "B" outlined in black under the letter "S" of "SHUFFLE". Next to the gold circle and directly below the "H" is a small green circle containing a white four leaf clover outlined in black. Next to the green circle and directly below the "U" is a small red circle containing a white uppercase "S" outlined in black. The black around the circle represents background and is not claimed as a feature of the mark.