Putting on a condom correctly takes about 10 seconds and makes a significant difference in protection. When used perfectly every time, condoms prevent pregnancy 98% of the time over a full year. The gap between that number and real-world results almost always comes down to application mistakes, not the condom itself. Here’s exactly how to do it right.
Before You Open the Wrapper
Check the expiration date printed on the individual foil packet. Condoms have a maximum shelf life of five years from the date of packaging, and using an expired one increases the chance of breakage. The foil should feel like it has a small air cushion inside when you press it gently between your fingers. If the wrapper feels flat, sticky, or brittle, the seal may be compromised. Toss it and grab another.
Storage matters more than most people realize. Latex breaks down when exposed to heat above 104°F (40°C), so a condom that’s been sitting in a car glove box, a back pocket, or a wallet for weeks may already be weakened. Keep them in a cool, dry place out of direct sunlight. A nightstand drawer or a toiletry bag works well.
Step-by-Step Application
Open the wrapper carefully by tearing along the serrated edge. Don’t use your teeth or scissors, both of which can nick the latex. Push the condom to one side of the packet before tearing so it’s out of the way.
Before anything touches skin, figure out which direction the condom unrolls. It should look like a small hat with the rim rolling outward, away from the tip. If you place it on the penis and it won’t unroll, it’s inside out. Don’t flip it over and reuse it, because pre-ejaculate may already be on the outside. Start with a new one.
Place the condom on the head of the fully erect penis. Pinch the tip (the reservoir) with your thumb and forefinger to squeeze the air out. This step is easy to skip and important not to. Trapped air is one of the most common causes of breakage during sex. While still pinching the tip, use your other hand to unroll the condom all the way down to the base of the penis. It should feel snug but not painfully tight, with no air bubbles along the shaft.
Getting the Right Size
Condom sizing isn’t standardized across brands, but most manufacturers in the U.S. group their products into three general categories based on nominal width (the width of the condom laid flat):
- Snug or slim: 49 to 52 mm
- Standard or regular: 52 to 56 mm
- Large: 56 to 60 mm
The measurement that matters most is girth, not length. To find yours, wrap a flexible measuring tape or a strip of paper around the thickest part of your erect penis, just below the head. Divide that number by 3.14 to get the width, then match it to the ranges above. A condom that’s too tight is more likely to break. One that’s too loose is more likely to slip off. Both reduce protection.
Choosing the Right Lubricant
If you need extra lubrication, what you use depends entirely on the condom material. Oil-based lubricants (including coconut oil, petroleum jelly, and many massage oils) weaken latex. One study found that oil-based lubricant more than doubled condom slippage rates compared to using no additional lubricant, from 3.8% to 8.5%. Breakage also increased, though by a smaller margin.
Stick with water-based or silicone-based lubricants when using latex or polyisoprene condoms. If you’re using polyurethane condoms, oil-based options are safe because polyurethane resists oil degradation. Apply lube to the outside of the condom after it’s on, not to the penis before the condom goes on (which can cause slippage). A drop or two inside the tip before rolling it on can increase sensation, but more than that makes it slide.
Latex, Polyurethane, and Polyisoprene
Most condoms are latex, which is stretchy, affordable, and well-studied. If you have a latex allergy, you have two main synthetic alternatives.
Polyisoprene feels similar to latex with a slightly thicker, form-fitting texture. It stretches well and performs comparably for pregnancy and STI prevention. It’s a straightforward swap for anyone avoiding latex.
Polyurethane is thinner than both latex and polyisoprene, which means better heat transfer and more sensation. It’s odorless and compatible with oil-based lubricants. The tradeoffs: polyurethane doesn’t stretch as much, fits more loosely, and is more prone to both breakage and slippage. It also costs more. One practical difference is that polyurethane condoms can be unrolled in either direction, so there’s no wrong side. Most studies show polyurethane is slightly less effective at preventing pregnancy than latex, largely because of fit issues rather than material failure.
Removal and Disposal
Timing matters here. Withdraw while the penis is still erect. As it softens, the condom loosens, and fluid can leak around the base or the condom can slip off entirely inside your partner.
Hold the condom firmly at the base of the penis as you pull out so it stays in place. Once you’ve withdrawn, slide the condom off away from your partner’s body. Tie a knot in the open end to prevent anything from spilling, wrap it in tissue, and throw it in the trash. Don’t flush condoms. They don’t break down and will clog plumbing. Each condom is single-use only.
If a Condom Breaks
You’ll usually know. There’s often a noticeable change in sensation or you’ll see the damage when you withdraw. If it happens, stop immediately and pull out.
For pregnancy prevention, emergency contraception is most effective within 72 hours (three days), though some options can be taken up to five days after. Effectiveness drops with every hour you wait, so sooner is meaningfully better than later. Over-the-counter options are available at most pharmacies without a prescription.
If there’s a concern about HIV exposure, preventive treatment called PEP can protect you, but it must be started within 72 hours. This requires a prescription, so contact a healthcare provider, urgent care clinic, or sexual health clinic as quickly as possible. For other STIs, testing is typically done a few weeks after exposure, since infections need time to become detectable.
Common Mistakes That Reduce Protection
Most condom failures trace back to a handful of avoidable errors. Putting the condom on after sex has already started exposes both partners to pre-ejaculate, which can contain both sperm and infectious agents. Not leaving space at the tip (or not squeezing the air out) creates pressure that leads to tears. Using an oil-based product with latex, even something as seemingly harmless as hand lotion, compromises the material. And waiting too long after ejaculation to withdraw lets the condom loosen and leak.
Double-bagging (wearing two condoms at once) actually increases friction between the layers and makes breakage more likely, not less. One condom, properly applied, is the correct approach.