The first pair I received, the flip flop hurt between my toes. "the stitching was to thick" I returned and re-ordered. The second pair are very comfortable, no breaking in needed.
Excellent customer service. No extra charges.

FYI  as with all footwear, wear around your home as once they hit the streets you may not return if needed.

Update nearly one year later Oct 4 I am ordering a new pair. I have worn mine out. For the price as much as I wear them, they a good deal.