Knee-Length BootsPinko's Knee Length Boots are made of fine soft and smooth nappa leather, with leggings equipped with internal zippers for easy wearing and refined straps with metal loops. Rounded toes and thin, high heels give these styles a feminine yet assertive look. Leather lining, lightly padded leather insoles and soles made of tunit, a synthetic material that mimics the characteristics of leather, complete the shoes.