Ok, these are great quality, very useful, BUT-
if you only need a 1 or 2 inch extender with a little give, go for a different brand because the elastic in these stretches out for miles! I basically needed something the length of the hook part of the actual bra, but figured the extra stretch would be nice for bloated days. This thing stretches across my entire back causing the whole bra to slide up and the shoulder straps to fall constantly.
on the plus side, if you happen to have a bra that has a band 3 sizes too small, this will still work!