This is a revision to my prior review which was more about MerreIl shoes generally. I am a long time fan. TYPICALLY, just based upon fit, comfort and durability, they are worth every penny. AND, I recently discovered the Q-form technology, which is designed based upon a difference in a woman's build. Go to their site and read about it. In my experience, this in not hype. I have had two total knee replacements in the last two+ years from which I am still in pain. THESE Q Form SHOES MAKE AN AMAZINGLY positive impact in my pain level and how long I can be on my feet.  HOWEVER, after wearing these particular shoes around the house, I noticed that the toes on one foot slid off the front of the shoe. The shoe was correctly sized as there is plenty of room in back.  As I have a high arch and a high instep, this NEVER happens to me. I have to be careful to get a shoe that is generous in this area. As the other shoe (for my smaller foot) was fine, I suspect that this was a defectively manufactured individual shoe. Don't know if Merrell sells seconds through internet sellers. This could be why they are priced slightly less. I recently bought another Merrell through Amazon that seemed to be defectivly designed.  So this is something to weigh in online shoe purchase. Return is also typically a battle. I have probably bought my last shoe online.  BTW, the absolute best sandal I have ever worn is the Merrell Aster.  I do not think it is in production any longer, but I was recently able to pick up a second pair at DSW. Cute too. Merrell, if you are listening, please check your QC and if you are selling seconds (shame on you), at least stamp the box and shoe and make the sellers label them as such.