I bought these sandals to wear to a wedding reception.  I have foot problems and can't wear high heels.  These sandals were very comfortable and I had no trouble standing in them for a long time at the reception.  The only reason I didn't give them a 5 star rating is that they lack in any real arch support.  However, the foot bed is fairly soft and even though I have high arches and usually wear orthotics, I still was comfortable in these sandals.  The soles are very flexible too.
I would not want to walk great distances in them, though.  I think the lack of an arch support inside would cause me a lot of discomfort.
They seemed true to size and are easy to adjust for a custom fit.