They are used primarily on the genitals or around the genitals, but some can be used on other parts of the body as well. People use them when they are on their own or with partners. On the whole, people who use sex aids do not use them every single time they engage in sex nor do they always use the same aid on each occasion. The list of sex aids is a long one. They are usually sold in special erotica shops or through mail order catalogues.
Vibrators are electrical machines powered by batteries or plugged into electrical outlets.
The more popular kinds of personal vibrators are battery powered, cylindrical or penis shaped in different diameters and lengths, and sometimes come with attachments for different parts of the body. The sexual sensations produced by a vibrator can be both intense and rapidly felt. Vibrators must be used gently on sensitive body tissue. Some people use a towel between the skin and the vibrator to cut down on the intensity of the sensation. Using a water-based lubricant can also make a vibrator more comfortable and stimulating.