Dai-Do 5 has a distinctive design that provides unique forms of stimulation and control. Dai-Do 5 features a spherical handle that rests easily in the palm of your hand, allowing you flexibility in positioning and unmatched ergonomic control for your heightened pleasure. Dai-Do 5 features a graduated stacked ball design that will flood you with surprised pleasure as the increasingly larger balls penetrate and caress. Fashioned of high grade aluminum alloy, Dai-Do 5 has a substantial weight and feel for added pleasure not common with other materials and yet, does not have the fatiguing heft of other metals. For added sensation, warm or chill your erotic instrument and enjoy the unique thermal properties that make this product especially inviting for the exploration of hot or cold sensation play.