For me, that is the acid test.  I don't even think about my feet when I'm wearing these. They are wide enough in front not to squeeze or rub my toes (I don't want bunions!)and allow me "wiggle room."  I work on my feet, and I don't even feel the shoes. My plantar fasciitis is nonexistent. My heels don't feel as though they're going through to the floor; very cushion-y. They cup my heels somewhat and have lasted much longer before "rolling" to the outside like other shoes (I supinate rather than pronate). Oh! I also took up some light running recently wearing my year-old shoes, and they are up to the task - just as comfy as walking and working.  Toning? Whatever. I just hope they keep making them as long as I want them!