There are now many different condoms to choose from, in a wide variety of colours, shapes and sizes. A condom helps to prevent sexually transmitted infections (STIs) and, when used correctly, protects against pregnancy 98% of the time. But the figures are often not as good in practice because condoms aren't always used correctly.
Size does matter
In the past, condoms have been made as one-size for everyone. It's been found that condoms often fail to work properly because they're not the right size. If a condom is too tight, it can break, and if it's too loose, it can slip off or just as easily break because of the extra friction. Width is more important than length.
An increasing number of websites now provide condoms in different sizes. Lucky Bloke recommends using the cardboard tube from a roll of toilet paper to help judge the size of your penis. If your erect penis has plenty of room inside the empty tube, you need a small condom. If you have just enough room then you need a medium-sized condom. And if the tube is tight then you need a large size.
Condom-sizes.org includes tips for measuring yourself without using toilet paper rolls. They include size charts for condoms available in different countries.
TheyFit (based in the UK) makes 66 different condom sizes - 10 different lengths, and 10 different widths. The website also includes help with finding the right size.
Latex condoms are the most widely available and are not expensive - so are the first choice for many couples. Latex is very reliable at preventing pregnancy and STIs. However, irritation (itching, redness, or rash) may occur after using a latex condom, due to latex allergy.
Non-latex condoms are certainly a great choice for men (or their partners) with latex allergies. Some people prefer them because they feel different from latex condoms. There are many different varieties of non-latex condoms.
Non-latex condoms are not quite as effective as latex condoms and have a higher rate of breaking, meaning their effectiveness is very slightly lower at around 95%.
The most common material used for non-latex condoms is polyurethane, but other materials such as lambskin are also sometimes used.
Some people find lambskin condoms have less effect on sensation than latex, but lambskin is much less effective at protecting against STIs and preventing pregnancy.
A spermicide immobilises and destroys sperm and is often combined with a condom. Spermicides are up to 80% effective if used on their own, but this increases to 97% when combined with a condom. But that's very slightly lower than using a condom without a spermicide, which is 98% effective. That's because there's a slight risk of the spermicide damaging the latex. A spermicide may also cause some irritation.
Using a lubricant doesn't make the condom any more comfortable but does reduce the risk of the condom breaking or falling off because vaginal dryness can cause friction. Not all lubricants are compatible with condoms though.
Latex can be damaged by oil-based lubricants, so condoms should not be used with products like baby oil, coconut oil, Vaseline®, or body lotion. Water-based or silicone-based lubricants should be used instead.
Many people find ultra-thin condoms have less reduction in sensation and pleasure. They aren't any more likely to break than other condoms so there's no increased risk. This all makes ultra-thin condoms very popular but they also tend to be more expensive.
Novelty and flavoured
There are many types of speciality condoms, including glow-in-the-dark, textured, flavoured, and many different shapes. Many novelty and flavoured condoms are made from latex and are just as effective as other latex condoms.
But not all speciality condoms are good enough for preventing STIs and pregnancy. Always check the packaging to make sure the condoms are approved. Otherwise choose a different variety.
Female condoms have been shown to be less effective than male condoms due to the difficulty with inserting them properly. However, they have 95% success at preventing pregnancy and STIs if used properly, which is only slightly less than male condoms. The female condom gives women control over their own protection against STIs and the condom can be inserted up to eight hours before sex.
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