I have plantar fasciitis which is easily aggravated by most shoes - especially sandals. It has been especially difficult to find sandals that don't bother my feet. To complicate matters, I blister easily. And, I need adequate but not hard arch support or I have foot pain.
These sandals are the most comfortable I have ever worn. I wear them all day - I hike and walk the dogs in them - I even have run in them when I've needed to - without any problems. I would give the six stars if I could for comfort without looking like clunky old-lady shoes.