As most people, know rainbow sandals are very comfortable. But you may not know that even if you have foot problems such as planter fascitous you should be able to wear these. The doule stack is a plus in that it provides the arch support needed to keep your heel from hurting at the end of the day. The narrow strap is a plus for those of us that have a but of a pudgy foot! You have to love the fact that they are available in so many colors also! I highly recommend these.