The Large Flying Silent Spinner Saucer Exercise Jogging Running Wheel is perfect for small animals. With a unique design, it provides an out-of-this-world experience that promotes exercise and healthy living. Made from a durable plastic material, it’s easy on the pet’s feet and safe for use. It measures 7 inches wide by 7 inches deep by 5 inches high and comes in a variety of colors including white, blue, yellow, green and pink.