Love these shoes. Comfortable for work. They were comfortable from the moment I put them on until I took them off. I have several birkenstock shoes, sandals, and boots. My back never hurts with them. As long as birkenstocks are sold, I will continue buying. These brand of shoes last many years. I love them! They are perfect! Wish this brand didn't cost as much as they do but are worth it. I have spent a small fortune on them but my feet thank me.