Super comfortable! I love the adjustable strap on top since I have flat wide feet.  No rubbing, no chaffing, nothing but comfort!  I plan to buy a couple more pairs!
Being flat footed, I deal with a lot of foot pain, and these sandals are not only comfortable to wear for hours, they are also very stylish.  These shoes knocked it out of the park for me and I would highly recommend them to anybody!  Clarks shoes/sandals, pretty much never let me down.