I bought the tan colored ones last year and fell in love with them, they are oh so comfy.  They keep your feet warm when it is just a little cooler out or in the summer when you are in air conditioned rooms (my feet are the first to get cold), but I can also wear them when it is really hot. I did go up a size, I normally wear a 6-6 1/2 and I bought a 7. I just got them in black. These are my favorite sandal!