I also love Keen Womens Sandals because of the unparalleled support they provide. The company uses some kind of patented EVA foot bed in many of their shoes to provide superior arch support and protection. A few of my friends suffer from fallen arches caused by spending far too much time in high heels and other shoes that didn't have proper arch support. There is no way I want to risk that kind of problem, so that's another reason I stick with Keen's offerings.
