They are super cute and waterproof but I have thick calves(I am not obeses, I am an average size, but my calves are thicker than average).  I just could not keep wearing them because they cut into my calves and left a red mark.  If they are tight, they also bend and look silly.  So, of you have slender calves, they are worth the cost and will keep your feet dry.  If your calves are like mine, well, no dice.