Product Specifications: Material: Upper Material: Artificial leather x synthetic fiber; Sole: Synthetic sole weight: Approx. 9.6 oz (260 g) (one side); Insole: Mizuno Energy insole (removable); Shoe Width: 2E equivalent country of origin: Vietnam; Product Details: This product is different from the classic and comes with Mizuno Energy Insoles that are just as easy as the classic and can be coordinated. UNO Enerzy Insole: The insole uses a midsole material with excellent softness and rebound. Mizuno Wave: The corrugated construction of the sole provides both cushioning and stability. PoWnCe Midsole: The midsole material is approximately 10% lighter while remaining resilient as ap+. Intercool: The ventilation system allows moisture to be extracted from the air vents placed in the sole to reduce the humidity and temperature inside the shoes.