They were a little tight on my calf at the top of the fabric, so i rolled them down about an inch and that took care of it.  Wonderful how cute they are and how dry they stay.  Usually we just have rain here, but this weeks it's snow and ice.  pretty good traction too.  I've worn them maybe 20 hours since I got them, in snow and in rain, and I'm really happy with them.
update Dec 2012 Someone with similar boot remarked they slipped on icy ground, but I didn't.  I really love these!  I've lost some weight and unfolded the top of the boots.  But sometimes I like them better folded back down.  They're cute!