First off, I normally wear a size 10 shoe, and have problems finding a boot that fits over my 15.25" calves. I ordered these boots in a size 10, and they fit my foot fantastically. They fit over my calves, and can also be worn over skinny jeans, but only just barely and with some finessing and finagling required.  There is a bit of a push necessary to clear the bottom of the boot shaft and get your foot into the actual shoe, but once in, the fit is divine- snug around the foot but not tight, and the buttery leather on the top of the insole feels awesome under my feet.
  The boots are lined in what feels like flannel, and the lining covers the entire inside of the boot. The lining helps with warmth pretty effectively, and from my ankles to the top of my calves (where the boot ends) are roasty-toasty, but these are thin boots, and the liner doesn't keep the tops of my feet from getting a little chilly. I find that wearing them around inside for a while until my feet warm up before I go outside allows me to retain heat around my feet for longer than just putting them on right before leaving the house. But I won't be walking through any snowbanks unless I really, really have to - these boots are waterproof, so my feet stay dry in snow, but the leather/lining combo is too thin to stop the cold from seeping through if you have to plow your way through a snow drift.
  Great traction, supreme comfort - walking around in these boots feels really awesome, and warm down to about 5 degrees F... I'd say these are better suited for autumn or mild winter, maybe even spring. The leather of these boots is gorgeous - smooth and supple and high quality, the drawstrings are functional and help to secure and customize the fit of the boot shaft to the leg, and the ruching looks nice as well as helps hold the shape of the boot.
  So, to wrap it up, I was expecting a much warmer boot, but was bowled over by the comfort and am willing to compromise by wearing thicker socks to keep my feet from getting cold. However, had I paid even half of the list price for these boots, I'd have sent them back and looked for something warmer. $60 for flannel lined leather boots, though? Yeah, score.