Kalso Earth Women's Glide 2 Walking Shoes Microfiber Upper Negative Heel Technology helps strengthen and tone muscles and improve posture. Anatomic arch support encourages a more natural stride. Eco-friendly BioFoam cushioning absorbs shock for softer steps. Lacing system allows you to customize the fit. Microfiber upper, spandex upper lining, mesh sockliner, BioFoam insole, E-Max and latex outsole.