Man-made materials, never worn, in impeccable condition. The wedge is 3" at its tallest point. Silver metal buckles at calf and ankle lend a riding boot style and allow for adjustment. Lined with black, lightly textured fabric for a touch of added warmth. The tops end at just below the knee. Please note: these are NOT wide-calf boots! The circumference is about 15 ". x-posted