A sex and relationships specialist has said that wearing the wrong condom size can create much bigger problems than many people expect, while also helping explain why protected sex often feels less enjoyable for some couples.
Gemma Nice, a sex and relationship coach who works with Condoms.uk, says the main problem is usually not the condom itself but whether it fits correctly.
She says many people who believe condoms are unsuitable for them may simply never have used one in the right size, and that proper sizing can make a major difference to both comfort and reliability.
“The issue is sizing, not condoms themselves,”
Nice said the difficulty is made worse because most shoppers do not get much help working out fit before buying.
“Unlike most health products, condoms are almost never tried before purchase and rarely come with sizing guidance at point of sale,”
She said this means
“the burden of getting the fit right falls entirely on the buyer, usually without them realising it.”
Public health guidance says condoms work best when they are used correctly and consistently, and that mistakes can lead to breakage, slipping or leakage. NHS advice also notes that condoms come in different sizes and that the right fit matters because a condom that is too tight or too loose is more likely to fail.
Nice explained that condoms which are too tight can reduce blood flow, something she says can have a direct impact on arousal and physical sensation during sex.
She also warned that extra strain on the material can make tiny tears more likely to develop during use.
“may not be immediately visible but compromise protection.”
According to Nice, tight condoms can also be more likely to split when being removed, creating extra danger at a stage when many assume any risk has already passed.
“at the point most people assume the risk is already over.”
She added that discomfort caused by condoms that are too small is among the reasons many men give for not wanting to use protection, meaning poor sizing can affect not just the experience itself but whether condoms are used at all.
Nice said the opposite problem can be just as troublesome. If a condom is too loose, excess material can gather during sex, which may dull sensation for both partners.
She said a loose condom is also more at risk of slipping off during sex without either person noticing, and could even remain inside one partner after withdrawal.
“defeating its purpose entirely.”
Nice further explained that spare room inside a condom can create air pockets, which may raise the chance of breakage from friction during sex and add to the overall level of risk.
Her comments come as sexual health experts continue to stress that many bad experiences with condoms may be linked more to sizing than to product quality, and that getting the fit right could improve both protection and satisfaction.
Health services also recommend checking the expiry date, opening the packet carefully, and using a new condom for every act of vaginal, anal or oral sex. For latex condoms, water-based or silicone-based lubricant is usually advised, while oil-based products can weaken the material.
Experts say the best way to find a better fit is usually to look at the condom’s nominal width rather than just its length, since different brands can vary considerably. If a condom repeatedly feels too tight, too loose, or uncomfortable, trying another size or style may make sex safer and more enjoyable.
Internal condoms are another option for some people. Unlike external condoms, they come in one size and are inserted inside the vagina or anus rather than worn on the penis.
Anyone who thinks a condom has split, slipped off or been left inside a partner should stop sex and seek advice from a sexual health service, pharmacist, GP or clinic as soon as possible.