Get hot with our heavy CyberSilicone Pleasure Spheres! These Pleasure Spheres consists of two hollow, slightly elliptical balls that are seamlessly connected by sturdy CyberSilicone. Each ball contains a heavy, slightly smaller ball inside which is free to vibrate as you move. The subtle vibrations produced by the inner ball are intended to massage and stimulate the vaginal muscles and can even be used for Kegel exercises or anal fun. CyberSilicone feels like CyberSkin, but can be heated to high temperatures and even boiled in water.