With plantar fasciitis, I've found Orthaheel Technology to be the ticket! Vionic bought that a few years back and put it into their shoes. These sandals are comfortable! They are very pretty and the velcro allows you to adjust all straps to exactly fit the way you like it. The advantage of Orthaheel (in)soles over others I tried is that the arch starts back further toward the heel. So many shoes have the arch so far forward--almost to the ball of the foot--that it is not supportive at all. The heel cradle also helps stabilize the foot when moving, and creates even better arch support since the heel is lower than neutral. I highly recommend these sandals and any shoe with Orthaheel soles!