Merrell Women's Encore Groove Pro Merrell Air Cushion absorbs impact as you walk and centers the heel for stability. Nylon 6.6 injection molded arch shank provides excellent arch support, cushioning and stability. Waterproof leather upper helps keep feet dry and comfortable. Leather upper, Dri-Lex Shubuck upper lining, Ortholite open-cell polyurethane sockliner... Polyurethane insole, compression molded EVA midsole with air in heel, rubber outsole.