Black suede/leather Empress studded ankle boots from ZADIG&VOLTAIRE featuring silver-tone stud detailing, round toe, side zip fastening, ankle-length, pull-tab at the heel, branded leather insole and low block heel. POSITIVELY CONSCIOUS: This Planet Conscious product is crafted with leather that has been produced in an audited and certified Leather Working Group (LWG) tannery — scored according to a three-tier system. The LWG assesses and certifies leather manufacturers that reduce the environmental impact of production..