I have been a Birkenstock customer for many years.  I previously have purchased these same sandals in a store, not from Amazon.  I recently wore these that I purchased from Amazon on a trip to Arizona.  I felt like my feet were on cement.  Very, very hard.  My heels got so sore that I had to wear my Birkenstock SHOES with my shorts and capris. (not a good look!)  The fit and look were great, but I wouldn't recommend these to anyone!