I had never even heard of plantar fasciitis until I got it a few months ago. I researched it, and tried several things to ease the pain from orthotics to exercises, with limited results. Then I tried OOFOS, and within a week of wearing them every day, I experienced relief. The arch support is wonderful, yet soft. That's the upside. Other considerations:  The sizing is tricky (my shoe size is 8-1/2... these shoes are unisex sizing and there are no half sizes. After reading some reviews, I tried size 8. While it fits, it is snug; the 8-1/2 works best for me. The rubber material is somewhat sticky, and they can be hot. I usually wear socks. This is not an attractive look, but ...too bad. It would be nice if there were other color options besides basically brown and black (think Crocs). There are "shiny" models, but several reviews indicated that the finish peeled off. DISCLAIMER:  although they work well for me, all situations are unique. If you are desperate like I was, give them a try.