I am a leather boot HOARDER and have been searching for a GREY pair of tall boots and haven't found anything on leather that I like.  These popped up in my search so I thought I'd take a chance (and save a lot of $$) with faux. I'm glad I did -although it is immediate apparent that they aren't genuine leather (smell), they aee absolutely one of the most comfortable pair I own!  The sizing is perfect for me. I have runner's calves and the shaft fits perfectly - a little tight to zip the first time so I wouldn't recommend for over 16.5" calves. The inside is lined with s very soft faux-fur that is NOT too thick as I had feared because I want to wear them all day. I ordered my regular shoe size (I wear trousersocks - like nylon thin material - with boots so I don't size up). Love the style with the built in boot toppers.  Only thing Ibwish was different is tge color - they are a darker grey than U expected with a tan/light brown hue. Great boots for the price - I didn't have to drop a few hundred! I wear them all day with no discomfort - Highly recommend!