I have had nothing but trouble from this pair of sandals.  They fit too long in the toe area and the heel area rubs my foot against the strap in a weird way as my foot slides down the foot bed which is too long for my foot. This causes the arch support to push my foot back and makes the muscles in the back of my legs to ache badly.  The Z Cloud X2 style is so much better.  I ordered a pair of each style and didn't get an opportunity to wear them until recently since our weather here has been cold. Of course I am now twenty days past the return window and can't return them to Amazon.  I called Chaco's to see if I could exchange them and I was told I would have to take and send photos for them to determine if the the shoes are defective. (I don't know if they are defective or if they just don't fit me as well as the Z Cloud X2) If they decide that they are not defective then basically I am stuck with a pair of  expensive sandals that hurt my feet and make my legs ache if I wear them.  I thought a company like Chaco's cared about customer comfort and satisfaction which is why I tried them in the first place. The real sad part about all of this is that on the first day of wear I thought maybe I was adjusting the straps wrong or something so I looked on youtube to see if there were any videos on how to adjust the straps and Chaco's has a video posted that shows you how to adjust the straps and continues on in which a rep tells you to "hang in there as there is an adjustment period to get used to the shoes if you have never worn them before".  So I hung in there and now I'm stuck with a pair of Chaco's in a style that hurts my feet and legs and could easily be replaced with a style that is perfect for me.  There are an abundance of companies out there that will work with customers to make sure they are happy with their products...I thought Chaco's was one of them.