I bought these hoping for some great support for my plantar fasciitis. the sandals are really cute, but extremely hard in the foot bed...not so Great for really tender arches with fasciitis. Also, the toe thong is so stiff that it gets uncomfortable to wear in very short time.  I have many thong sandals with very comfortable toe thongs.  The arch support is as advertised, the shoe just needs a softer foot bed...maybe a little padding.  They are well constructed.
While I will wear them in the hopes of breaking them in, they won't be my go to sandal for comfort or for long days of walking.