Reason to Buy:Responsive full-length cushioning sculpted to energize an icon..Product Summary:Responsive cushioning in the Pegasus 42 provides an energized ride for everyday road runs. Experience power in every stride thanks to the propulsive feel of a curved, full-length Air Zoom unit and a ReactX foam midsole. An updated fit gives you more space in the forefoot and toe box..Product Features:We sculpted our full-length Air Zoom unit to deliver a propulsive feel and Nike's highest energy return from heel to toe-off..ReactX foam is 13% more responsive than previous React technology..Lightweight mesh is softer and more breathable than earlier iterations, helping your feet stay comfortable..An updated Waffle outsole delivers traction and flexibility with high-abrasion rubber and flex grooves..We updated the fit to give you a little extra room at the toes and forefoot compared to the 41..Greater toe spring than previous model due to an updated silhouette that increases the curve of the toe box.Full-length Air Zoom unit compared to forefoot and heel units in previous models.Product Feature Subheads:Full-Length Air Zoom Unit.ReactX Foam Midsole.Breathable Upper.High-Abrasion Rubber Outsole.Wide Toe Box.Product Details:Weight: Approx. 243g/8.6oz (Women's US 8).Heel-to-toe drop: 10mm.MR-10 2.0 Last - Updated from the Pegasus 41.