Nike Men's Pegasus 41 Running Shoes Color: White/Speed Red/Blue Shoe Width: Medium/D Upgraded breathable engineered mesh upper Improved engineered mesh on the upper decreases weight and increases breathability Plush collar tongue and sockliner for a secure and comfortable fit MR-10 Last for a consistent fit (same as Pegasus 40) ReactX foam is engineered to reduce its carbon footprint by at least 43% in a pair of midsoles due to reduced manufacturing process energy compared to prior React foam Weight: Approx. 297 g/10.4 oz (Men's US 10) Heel-to-toe drop: 10 mm