This is my second pair of Chacos.  I went with the Yampa this time to get a slightly lighter sandal since I wear them almost exclusively during the summer months.  It is a great fit and comfortable and noticeably lighter than the original model (which I wore for 4 years and they still look great). They are easy to adjust and they even come with a diagram if you are new to Chacos.  My husband and I both love to wear them and will keep our older pairs for yard work.  They are durable for activities ranging from light walking, running (my husband ran a marathon in his), water sports, and hiking.  I would highly recommend all Vibram products (I also wear the five fingers).