Oh, I guess these condoms are just about to expire.
Latex ages too, you know. And so, like all things growing old, it
gets 'wrinkles' which some very clever manufacturer use to
repackage and market as as ... you guessed it, RIBBED
CONDOMS.
Note: Above hypothesis, as with
all hypotheses, is NOT meant to be taken seriously but with two
pinches of salt and certainly not to be used as a reference or
quote for any other purposes than to discard after use (views).
Just like your egular condoms. 
