I've had crocs for years and have always purchased the Cayman style which is true to size.  I decided to change up by trying the Endeavor style and was disappointed.  I ordered a women's size 8 (which is what I've always ordered in the Cayman style) in the Endeavor style and they are too small.  They fit more like a 7 1/2.  Of course the Size 9 is too big, so I ended up returning this croc.