I have tried many like sandals over the years, even the original Dr. Scholls with the wooden soles. also have plantar faciitis - thankfully not an issue for seceral yrs due to adequate footwear. I am well aware that sandals such as these can take some getting used to! Have worn these for 2hrs /day over the past week. I find these most uncomfortable. Especially on the top where the straps are. I am size 9.5 and bought a 10 . They are too long but straps tight. Will update if things change