There was a news clip a few months back about a marketing effort to get males in some country (I believe it may have been India?) to use condoms more regularly by marking all the 'itty bitty' ones "extra large" or something like that.
In a separate report from a different country, a marketing change was being planned based on the complaint from users that "the standard size" slips off too easily.
I guess the moral here is that one size does not fit all.
(The joke was that if you unroll them far enough, the ones marked "huge" etc. have the real size up at the end. How far have you needed to roll one up?)