It seems that some researchers have been getting research money to find out what almost any guy here could have told them: many men find condoms too small. (Equally, no doubt, there are men who find them too big.) The study has been widely reported in the news, e.g. here (in London) and here (in New York). Not sure why the manufacturers are so averse to making condoms in more different sizes. Is it simply market economics i.e. it's easier and cheaper to make them in only one size, or a few sizes, that probably 70 or 80 per cent of men find OK?