The following are guidelines, and the best ranges we recommend:
trends n bends- +3 sphere +2 cylinder (Please note,  since this frame is rubber, frames may pop out if bend around too much.)
cat eye walk +5 sphere +3 cylinder
divalicious +5 sphere +3 cylinder
sporty blends +4 sphere +2.5 cylinder
sporty gradients +4 sphere +2.5 cylinder
double d +4 sphere +2.5 cylinder
deliciously diva +1 sphere +1 cylinder (Please note, this is not really a terrific frame to rx since the lense are short on each side- more of a fashion/plano sunglass frame)