New in Box - Prada - Tall Shaft, Flat - Knee High Riding Boots, color Black, size 38.5. Retail $1990. These are a pull-on style with a 7" ankle zipper - you unzip the zipper to help slide your foot into the boot. The calf on these is medium width - 6.5" or 13" circumference which fit an average calf - also these will stretch over time. Size 38.5" - Prada typically runs 1/2 size small, so these would fit size 38. Dimensions - Shaft Height: 20", Width of Shaft opening: 6.5" (13"), Heel: 3/4", Inner Zipper: 6 3/4". The Prada box has one torn corner that has been taped. There is Prada branded tissue paper and a Prada card in the box, but no dustbags.