I bought this sandal because, due to an auto accident, I have one leg a little shorter than the other and need a 1/2 inch lift on my left shoe. I need this lift whenever I am standing, not just when I walk around outside. Many friends, meditation groups, etc., ask people to remove their shoes when you enter their dwelling or meditation center. If I comply, I hurt my back. If I don't comply, I bring the dirt of the outside into their special place on my shoes. I bought these sandals, which are relatively flat, have an easy velcro strap, and have a white sole, so I could build up the left sandal as I need and have an "in home only" pedorthic sandal that I can easily don (thanks to the velcro strap) when I enter the home or centering place of anyone who asks guests to remove their shoes.  I can wash the bottom of the soles between visits and keep the sandals very clean.  My friends are grateful that I am considerate of their preferences and they are considerate of my need to balance my two legs.  It's a perfect solution.