Even with all the chemical means of birth and disease control, good old condoms are pretty effective.
But like they say, size matters. If they aren't comfortable they won't get used, and if they fall off that's bad.
Somebody came up with the idea of a size checker like the have for ring size.
Good idea but the guy has a whole handful of them, that a waste of resources.
They only need one in each store, attached to the shelf with a chain like the pens in the bank.
