Nike Men's Pegasus 41 Running Shoes Brand new, 100% authentic guaranteed Ready to ship! DESIGN:Upgraded breathable engineered mesh upperImproved engineered mesh on the upper decreases weight and increases breathabilityPlush collar tongue and sockliner for a secure and comfortable fitMR-10 Last for a consistent fit (same as Pegasus 40)IN-SHOE COMFORT:ReactX foam midsole surrounds forefoot and heel Air Zoom units for an energized rideAll-new ReactX foam midsole is 13% more responsive than previous React technologyDURABILITY & TRACTION:Signature waffle-inspired rubber outsole for traction and flexibilityADDITIONAL DETAILS: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