I bought these for my brother who has very high arches.  He cannot stand or walk barefooted without a lot of pain.  He has custom orthotics in his shoes, but hadn't been able to find sandals or flip flops that he could wear comfortably.  I bought these based on the reviews and is he happy I did.  He loves them.  I'm ordering a second pair (to rotate with these since he rarely takes them off).  I only wish they came in more colors.