Genuine UGG insulated shaft suede black boots for winter. The sole has tread for bad weather. The heel is 1 inch. The shaft is 16 inches from floor (including heel) to top of shaft. The shaft is padded..not sherpa lined. The sherpa insoles were replaced with off brand sherpa insoles. Beautiful boots. Lots of padding on shaft... with zipper up the back of shaft. Love these, but too tall shaft for my 5 foot height. Cozy and durable design. Ideal for cold weather. The shaft lying flat is 8 inches for a total calf circumference of 16 inches.