Kaitlyn Pan Women's Microsuede High Heel Over the Knee Thigh High Boots Top quality microsuede U.S. shipping and return Heel height: 3.5" (9 cm), approximately Shaft material: microsuede outside and Spandex, Lycra or elastane 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