Merrell Women's Encore Nova (10.5 M in Dune) Leather Rubber sole Molded nylon arch shank prevents pronation and provides enhanced stability. Impact-absorbing Merrell Air Cushion centers the foot for stability. Rubber outsole delivers superior traction on both wet and dry surfaces. Full-grain leather upper, mesh upper lining / sockliner, EVA midsole, nylon shank... Carbon rubber outsole, Ortholite / open-cell polyurethane insole.