These are very comfy, and the break-in period was nil.  Wore them all day with no issues.  The sole is very forgiving, but not so mushy that it puts you off balance.  They look and feel good.  My summer will probably be happier for having gotten them - I see lots of wear ahead.

The only negative, and for some it may be a positive:  This is difficult to articulate and I hope I can make this clear.  The footbed length of the shoe is accurate to size, if anything a teensy long.  Still, even though the footbed is long, the thong part that goes between your first and second toe is set a little far back.  That means your whole foot ends up set further back from the front of the sandal.

This leaves me with a lot of space between the tips of my toes and the front of the shoe.  All that space looks a little funny, though it does not interfere with anything... it just looks like I got them a size too big.  I don't think my toes are short either.  But if you have long toes, this will probably work well for you.