How do you keep sling back shoes in place?

I bought a new pair of shoes, sling back pumps, they fit my foot, but when I walk the back slips off. I added inserts made for heels and it helped a little but they still end up coming off the back. They sling back have a peice of elastic, and no buckle. I can%26#039;t return them because they were a clearence item, and the store doesn%26#039;t have anymore stock. HELP!

How do you keep sling back shoes in place?
Have you tried a pad in the toe area of the shoe to keep your foot from sliding too far forward? Or, something you can put on the strap to help it grip your foot better?



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