This is the first pair of Chacos that I have ever bought. And I LOVE THEM!!!!!! Even though it took a little time to break them in because of the way my foot falls when I walk. After my foot made the proper impression into the foot bed I can really feel the comfort from the design when I walk. I didn't think I would like the Z/1 Unaweep Sandal without the toe loop I actually like it better that way. Because I can really feel my toes grip the foot bed when I need to gain some extra force on pushing my foot off of something. I HIGHLY RECOMMEND CHACO  SANDALS  for anyone looking for a comfortable and great wearing sandal for whatever they doing. just going out or doing some serious hiking they are very comfortable after the initial breaking in point for any shoe that you buy new.