Dr. Laura Berman's Intimate Basics Siena is intended to be a novelty products and is a wonderful beginner's toy, with a smooth, traditional shape. This velvety toy is ideal for internal or external stimulation. Great for women, who prefer a sensual shape and feel. Use with or without the continuous speed vibration, which also works great for stimulating the labia, clitoris and more. A new Velvety-Cote technology makes Siena's surface soft and smooth and it's waterproof.