Did you know why penises have natural bumps and bulges? That is nature's way of ensuring that every woman will get complete satisfaction from the sex act. The natural bumps act as stimulators that will pleasure the sensitive spots of the vagina. That is why ribbed vibrators are heavy favorites of most women. The ribbed shaft and the smooth indentations of these vibrators provide extra friction for maximum pleasure. The ribbed shaft will rub against the vaginal wall which stimulates millions of pleasure nerves. So whenever you insert a ribbed vibe in your vagina, you will surely get extra sensation that will keep your sex juices flowing. And when the dong vibrates inside you, then you will surely reach multiple orgasms quickly. Ribbed vibrators come in different sizes, colors, and designs. They have multiple speed options, waterproof, and work silently. The only sounds that can be produced by ribbed vibrators are your moans of pleasure.