Wonder what constitutes size small to these breezies womens' company. It's certainly not for "A" cup small women as none of these women are small by any stretch. They do not make bras for small breasted women, never have and never will.
Bras that must fit precisely are always listed by band and cup size....the better, more expensive bras. I've never in my life bought a bra listed by s,m, or l.