These are fabulous! So comfortable that I now have this style in mocha, green, and yellow. I've worn Naturalizer shoes since I began working 45 years ago. They've always manufactured shoes that I could wear all day without my feet aching or getting tired. And, yes, I, too (see another reviewer's comments), wear one of these Viola as a slipper! These sandals are true to size but will "give" in width because they're leather.  To test width, I also purchased a different style in narrow and found them to be way too tight, and I didn't want to take the time to wear them often enough to make them comfortable.  The medium Viola, on the other hand, didn't need a break-in period whatsoever. If by winter these get too wide for bare feet, I'll just wear them with socks. (So, what's wrong with that?) By the way, Viola is on clearance at naturalizer.com.