The Ripples consist of a straight-knobbed shaft with a curved base that fits comfortably in the palm of your hand. Available in crystal clear, a stunning cobalt blue, and onyx black. All Crystal Collection products are made of 100% hand-blown, premium Borosilicate glass that can be warmed to body temperature after a few minutes of use resulting in the most comfortable experience available. They can also be heated/cooled to personal taste!