I typically wear a women's size 6.5 - 7, and Crocs in Wm 7 usually fit fine.  These flip flops in a 7 are almost on the short side for me, but they may stretch a bit as I wear them. Otherwise, they are very lightweight and are comfy.  I will likely by them in other colors, possibly in a larger size.  UPDATE:  After a few weeks of light wear inside the house, the ends have begun to curl up at the toe and the shoe has flattened out in the center (under ball of foot) making them much less comfortable than originally stated.  This is disappointing as I normally love Crocs.  Will look for a different pair.