I have a narrow 6 foot and an instep thats 10cm too small in girth. It is extremely hard for me to find shoes that fit. Most of the time my heel slips because Im pushing foward. I tried these and voila! Shoes now stay on! I feel confident and secure wearing my shoes and it renewed my old shoes into new shoes...bonus because I love mary janes so this fits the bill. Just the fact it works sold me. I am now a huge fan and will get more.

I do however wish the front strap came in a thinner width for my more dressier shoes. It does have a crazy amount of buckle holes so these will fit even anorexic feet like mine.