Condoms are devices used for sagami 安全套 contraception, i.e. to prevent pregnancies. Though the basic purpose of condoms is birth control, they are also used in a major way to get protection from sexually transmitted diseases such as syphilis, gonorrhea and AIDS. The male condom is a cylindrical bag-like structure that fits snugly over the penis. It has a pouch on the anterior end, where the seminal discharge collects after ejaculation. It has a hardened rim at the base where it remains fit on the penis shaft. The condom generally has lubrication on it so that it could maintain greater contact with the penis, and also provide better friction with the female vagina. Condoms can be enhanced by using patterns and flavors on them. The most popular patterns are dotted, ribbed and contoured condoms, and the most popular flavors are banana, apple and chocolate.
The male condom is designed to fit over the erect penis. It was previously made primarily of animal skin or of latex, but now polyurethane is also being increasingly used. Latex has immense elastic properties and hence condoms can be stretched to very great limits without being worried of them getting torn. But latex has an offensive odor for some, and that explains the current popularity of polyurethane as the choice for condom manufactures.
Much has been written and said about the correct manner of putting a condom on. This is extremely important to know, because an improperly put condom could become ineffective in preventing pregnancies and also in preventing STDs. In order to put a condom, the penis has to be made erect first by sexual stimulation. Then the pouch of the condom must be placed over the glans. The condom must then be slowly unfurled over the length of the penis, till as far as it can go. Ideally, it must be pulled till the scrotal sac. Once the condom is worn, it must not be moved much, but used directly for penetrative sexual intercourse.