Condoms are a barrier method of contraception used during sexual activity to prevent pregnancy and protect against sexually transmitted infections (STIs), including HIV. There are two main types: male/external condoms and female /internal condoms. When used correctly and consistently, condoms are highly effective.
Male or external condoms are thin sheaths worn over the erect penis during sexual intercourse. They are usually made of latex, polyurethane, or polyisoprene.
Female or internal condoms are soft, loose-fitting pouches inserted into the vagina before sex. They are made from nitrile (a synthetic rubber).