ASICS Women's GEL-Trabuco 12 WR Running Shoe 100% Synthetic and mesh Rubber sole GEL Cushioning System attenuates shock during impact phase DuoMax Support System ensures that the shoe maintains proper support for the foot during the critical transition from heel strike to toe-off SpEVA midsole offers durability and shock attenuation Performance trail outsole has reversed lugs that provide uphill and downhill traction on all types of terrain while the forefoot rock plate provides protection against stone bruises Performance trail upper is water resistant and very breathable, gusset construction prevents debris from entering the shoe and causing irritation