Condom is a sheath like barrier device, which is used to reduce the possibility of pregnancy or STIs during sexual intercourse. There are male and female condoms. Women who use male condoms with their partners have an annual pregnancy rate of 2% by using them correctly and every time they have sex. In general, the annual pregnancy rate is 18%. Their use significantly reduces the risk of gonorrhea, chlamydia, trichomonad, hepatitis B and HIV / AIDS. To a lesser extent, they can also prevent genital herpes, human papillomavirus (HPV) and syphilis.

A male condom should roll over to an erect penis before sex and work by preventing semen from entering the partner's body. Male condoms are usually made of latex, less polyurethane or sausage. The advantages of male condom are easy to use, easy to use and less side effects. Polyurethane or other synthetic forms should be used for latex allergy. Female condoms are usually made of polyurethane and can be used many times.

Since at least 1564, condoms have been used as a method of STI prevention. Rubber condoms came out in 1855, followed by latex condoms in 1920s. They are in the World Health Organization's list of essential medicines, which are the most effective and safe medicines needed in the health system. Wholesale costs in developing countries range from $0.03 to $0.08. In the United States, condoms usually cost less than $1.00. Globally, less than 10% of contraceptive users use condoms. In developed countries, the rate of condom use is high. In the UK, condom is the second most commonly used method of birth control (22%), while in the US, it is the third most commonly used method (15%). About six to nine billion are sold each year.