I have constant heel pain, and have gone from being barefoot or wearing flipflops to having to wear tennis shoes with heel cups year round. I've tried many kinds of sandals, but within just a few minutes my heel hurts. I bought these because they were so very cute....and I can wear them, all day! I have a narrow heel that likes to slip out of shoes, but the adjustable back on these shoes helps with that. You can't just slip them on, but it helps to keep more scure on the foot when in the water (think creek bed or river) So much nicer in the hot desert summer to wear these all the time instead of hot tennies. Very happy, no heel cups needed :)