It took a few tries, but I found the perfect fit.  I ordered 8 1/2 Wide (usually wear 9 Med). The ties enable the boot to be worn under or over pants and fit nicely over my muscular calves.  Once they're tied, I can put them off and on easily by using the zipper.  The shearling lining makes them toasty, they look nice, not clunky like many cold weather boots, bottom tread give me sure footing, waterproof.