Perfect!
Where have they been all my life?  I have trouble with slip-on shoes and heels, and couldn't find something I liked with a strap that would go with the dress I was wearing for my daughter's wedding.  On a whim, I looked up invisible shoe straps, not expecting to find them at all, but there they were!  I was shocked!  Anyway, they worked great with my floor length dress.  I wear them with pants as well, but wouldn't wear them with a short dress because you can see them.  But for long dresses and pants, they're perfect.
Rating: 5 stars