The Castalia is a rabbit vibrator made of soft silicone and ABS, with a shiny metallic look base. The smooth shaft has a curved shape and stimulating nubs on the top, like a soft brush, which is great for G-spot stimulation. The clitoris vibrator also has these soft brush-like stimulating nubs. A special feature of the Castalia is Dual Density, which means that the core is hard and the outside of the vibrator is softer. This makes the toy feel like itâ€s the real thing. Another special and useful feature is the heating function in the top of the Castalia, which will bring it to body temperature for a pleasant experience during use. The 2 powerful motors are located in the top of the shaft and in the rabbit. They offer 3 levels of steady vibration and 9 different rhythms.