Onyx black calf leather Capri low-top sneakers from Koio featuring branded heel counter, round toe, front lace-up fastening, flat rubber sole, removable insole, leather lining and hand-painted trim. 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..