Propet Alta Women's Mid Zip calf shearling boot. This women's ankle boot is set in a suede leather and quilted nylon upper which features the Scotchgard-treated water and stain resistant technology. A front zip is for easy on/off. The Vaporex heat retaining double insole system offers extra insulation, cushion and fit customization. Soft pile lining for extra warmth and comfort. The Propet Alta Mid Zip is finished with a thermal rubber outsole designed for traction and shock absorption.