This is my first pair of Reefs.  I was searching for Rainbows and read about Reefs in some of the Rainbow reviews.  I live in sandals as long as the weather will allow, which can be 6 months here in the south, so I figured I'd try some Reefs.  Just got them today and they are soooo comfortable!  Just love them.  I wear an 8 which is what I ordered and they just fit.  My heel comes just about to the end of the foot bed - no extra room.  Hope they last.