Got these boots yesterday (ordered brown and black leather).  I'm wearing the black ones today.  I'm a bit over 5'10", regular sized calf, big girl (size 16 clothes, to give an idea of the weight w/out throwing it out there). These boots come up to about 2.5-3" below my knee and zip up perfectly around my 16" calfs (widest part).  The heel is just enough to show you're wearing a heel, but not so much that your dogs are killing you at the end of day.  At work, I have a standing desk, so I'm on my feet most of the day (sitting intermittedly) and do a lot of walking back and forth to copy room....These boots are holding up well and I'm very comfortable.  I'm wearing them with my M. Kors python pencil skirt, black sweater, leather jacket and scarf.  So you KNOW i'm smelling myself today...holla!  lol...I'm so glad I got these.  And I love that they have a good bit of friction on the bottom so I'm not sliding on on our tiled floors at work, though I DO miss that they don't make the notorious "clicking" sound when I walk b/c the heel has the rubber tip bottom.  But when I"m NOT busting my a** on the ice outside during the new england winter, I'm sure I won't be regretting that rubber bottom.  The tie-up bow on the back is adorable.  The zip up sides make them so easy to put on and take off. These will be a regular wear this winter.

9/20/12 - just want to mention, after loving the black leather ones so much, i now have the brown leather, elephant suede and brown suede as well.  the rubber tip fell off one of the heels of my black leather pair, i'm still wearing them (today, in fact!), but will get a new pair for this winter.