Kaitlyn Pan Women's Microsuede Flat Heel Over The Knee Thigh High Boots Top quality microsuede The boots with same sizes and different colors are actually the same, so please order one pair first before you can make sure the size works for you in order to avoid unnecessary return and exchange Heel height: 1" (2.5 cm), approximately Shaft material: microsuede outside and stretchable fabric inside Shoe lining and insole material: lambskin Calf circumference: 30 cm, can be stretched to about 35 cm; Boots opening circumference: 34 cm, can be stretched to about 39 cm; Shaft height: about 59 cm (measured from CN size 38)