It is rolled over the erect penis just before intercourse. There is usually a place at the tip of the condom to hold ejaculated semen. The condom provides a barrier that stops sperm from entering a woman's uterus. Latex condoms also provide a barrier against the transmission of sexually transmitted disease. Male condoms are available in a wide variety of styles, colors, and textures.
Most condoms are similar in size and fit most men.
Some condoms are coated with a special lubricant that kills sperm. Use a new condom every time you have intercourse. Either partner can place the condom over the tip of the erect penis, leaving a space at the top of the condom. Roll it down to cover the entire penis. Squeeze the tip of the condom as you roll it on to release any trapped air and prevent it from bursting during ejaculation.