Approx. 5 ½” and made of silicone. It encourages focus and self-soothing for users with anxiety, attention disorders and more. Press bubbles down to relieve stress. Make your own pattern by pressing on different bubbles or just press for fun. It comes with a split ring attachment. Colors: black, lime green, orange, red, royal blue or yellow. The price includes a one-color imprint in one standard color. Imprint area is 1 ½”w x 3/8”.