Female condoms, also known as internal condoms, are a type of barrier method of contraception worn inside the vagina to prevent pregnancy and sexually transmitted infections (STIs) . They are made of soft, thin synthetic latex or polyurethane and are inserted into the vagina before any contact with the penis. They work by creating a barrier that stops sperm from reaching an egg and also by covering the inside of the vagina, anus, and some parts of the vulva, which decreases the chance of coming in contact with semen, pre-cum, or skin that can spread STIs. Female condoms are about 95% effective when used correctly, which means that in a year, 5 out of 100 women who use them the right way every time will get pregnant. They can be purchased without a prescription or a visit to a doctor and can be used by people of any gender for vaginal or anal sex.