Each massager is artfully sculpted so that vibrations can stimulate with just the right force at the right locations. Given the variety in human anatomy and sensitivity, that means product contours and flexibility need to enable users to easily find their "sweet spots." Overall shape, the location of ridges and the orientation of flat spots need to be just right. Comfort and ease-of-use are also key factors; after all, these are products that are often used in dim light, with slippery, lube-covered hands, in moments of intense excitement! Under these circumstances, people get easily frustrated with products that are difficult or clumsy to hold and operate. All We-Vibe products are designed to be easy to grip and very simple and intuitive to control by touch alone. They enhance the lovemaking experience, rather than interfere with it because of bad design, awkward straps or trailing wires.