This multi-speed vibrating probe is constructed of soft, pliable AquaGel. Its shaft flexes and bends for multi-directional positioning. Insertion length is 6.25in with diameters from .75in up to 1.75in. Its texture is smooth and features four bulbous tiers, each a little bigger than the last. Three AAA batteries, not included, provide the robust vibrations. This jelly gem is totally waterproof for fun in and out of the water!