Use latex or polyurethane condoms for protection from sexually transmitted diseases. Condoms made from natural intestines, commonly called "skins" or "lambskins", are not recommended for disease protection.
Lubricated condoms are less likely to break because they are lubricated. Most condoms are lubricated with silicone lubricant.
Most condoms are 7 to 7 1/2 inches (18cm to 19.5cm) long, but several brands are longer then average. While most condoms have straight sides, some have wider head room and others are form fitting. A reservoir tip also helps to prevent condoms from breaking.
Condoms may have a very strong rubber smell, or almost no smell at all. People who use condoms for oral sex usually prefer condoms without spermicide, because it has a bitter taste.