Dildo

A dildo is a sex toy, often explicitly phallic in appearance, intended for sexual penetration or other sexual activity during masturbation or with sex partners.

A dildo is a device usually designed for penetration of the vagina or anus, and is usually solid and phallic in shape. Some expand this definition to include vibrators. Others exclude penis prosthetic aids, which are known as "extensions". Some include penis-shaped items clearly designed with vaginal penetration in mind, even if they are not true approximations of a penis. Some people include devices designed for anal penetration (butt plugs), while others do not. These devices are often used by people of all genders and sexual orientations, for masturbation or for other sexual activity.

Rubber dildos, usually incorporating a steel spring for stiffness, became available in the 1940s. This was a less than satisfactory arrangement because of the potential for injury from cuts by the spring if the rubber cracked and came apart. Later, PVC dildos with a softer PVC filler became popular. Most of the inexpensive dildos sold in the 2000s are made this way.

PVC and jelly-rubber toys have been found to be problematic because they contain unsafe phthalates, softeners added to many plastics that are also found in some jewelry, food containers, and other soft rubber toys. Phthalates have been linked to health problems such as cancer and prenatal defects. Products made of PVC or jelly rubber cannot be sterilized. Manufacturers recommend using condoms with these toys if users share them.

In the 1990s, silicone rubber dildos became more popular, a trend that has continued as the prices have lowered. These are easier to clean and do not have the characteristic plastic aroma of PVC. They were expensive when introduced but are now reasonably priced, making them an excellent choice for the first-time user. Silicone holds body heat well, and is an excellent conductor of vibrations, allowing users to hold a vibrator at one end. Silicone is also a robust material (especially when compared to the cheap, unsafe jelly rubber that many dildos are made of) that can be sterilized by boiling or bleaching (using a bleach solution, diluted: 10% bleach 90% water).

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