Experience the soft outer covering over the ridged inserts of the Gyrospheres™ from Doc Johnson. These non-battery operated Gyrospheres™ produce sensations from the interior metal balls. They are gravity activated, you can insert 1 or both balls and pull back out using the attached cord. Enjoy a new form of pleasure, with 3 unique colors to choose from. Together, balls measure 4 inches in length, each with a circumference of 4½ inches. Pink/White only