The mark consists of a horizontal rectangular puzzle piece shape with slight curvature and bulges at the corners and circular bulging circular portions emerging from the center of each side. In the center of the piece is the large word "XpresS" with the "X" and "S" capitalized. Within the lower right side of the rectangle is a small representation of three parallel horizontal lines, consisting of two longer lines - one on top and one on bottom - and one shorter line in the center, all directly to the left of the word "BedrocK" in small font with a capital "B" and "K". The top and bottom lines each contain three equidistant bulging circles, one at each end and one in the middle. The center line contains two bulging circles, one at each end.