adidas Performance Women's Springblade W Running Shoe 100% Engineered Stretch Mesh/Thermoplastic Polyurethane Overlays n/a Rubber sole Experience an explosive ride on thermoplastic polyurethane blades for durable cushioning and energy return Engineered stretch mesh for breathability and fit Sixteen individually responsive thermoplastic polyurethane blades for durable cushioning and energy return Molded ethylene vinyl acetate sock liner for step in comfort and anatomical fit Non-marking outsole with adiwear for durability in high-wear areas. Fit running about half size long