I own two older similar pairs of these Aerosoles sandals.  I was very happy when I saw this pair since I liked the old ones so much.  When they arrived and I tried them on, I noticed that they were very stiff and uncomfortable on the TOP off my foot (the sole is comfy). Upon further examination, I saw that these new ones are all "man made materials" on the uppers, while my old ones were leather.  What a HUGE difference quality materials make.  I'm not sure why Aerosoles decided to "cheap out" on their product. I walked around on carpeting for a bit and they still seem stiff and uncomfortable.  I will be returning them!