"A preservative or condom is a covering for the penis that the man puts on before the sexual act takes place. It is a delicate and thin material, usually latex (type of rubber). Condoms are used for two things: to prevent transmission of sexual diseases and unwanted pregnancy".
Mavis Jukes.

"There is not a 100% guarantee. They can rip or slide off. But if you always use it correctly they offer a good protection against infectious diseases and unwanted pregnancy".
Mavis Jukes.