i had a list, it was something like, bmi 25 but mines not, back aches, over a long period listed with dr, 2 proffessional fittings, over 18, some others i think, but you must be willing to looses half the sizes, so if i stay a jj i will have to go to at least a an f which is fine by me, that was the list 2 years ago, hope this helps, xx