WriteSite® Plus Jr. Skin Marker, 1 Box of 100 Suspensory Color code: Black Waterproof backing prevents strikethrough Color code: Black Rocker Board * The new Thera Band© Rocker and Wobble Boards combine an aggressive anti slip base design with a sensory stimulation surface to offer a new performance level to balance training * The Rocker Board moves forward and backward while the Wobble Board has a rounded bottom that moves in all directions * Both are made from lightweight molded plastic * Rocker Board: 13 1 8 x 14 * Ink is 3x darker than standard Gentian Violet ink after prep with ChloraPrep® products Virtually eliminates the need for remarking after prep