Responsive cushioning in the Pegasus provides an energized ride for everyday road running. Experience lighter-weight energy return with dual Air Zoom units and a ReactX foam midsole. Plus, engineered mesh on the upper decreases weight and increases breathability. Engineered Mesh Upper Upgraded engineered mesh is light and breathable. ReactX and Air Zoom Two Air Zoom units—one at the forefoot and one at the heel—work with soft, durable ReactX foam to give you a smooth, responsive ride. Waffle Outsole Our signature Waffle-inspired rubber outsole provides durable traction and flexibility. Plush Padding Padding on the collar, tongue, and insole give you a secure and comfortable fit. What's New? * ReactX foam midsole is 13% more responsive than previous React technology * Lighter, more breathable engineered mesh upper Product Details * Reflective Swoosh logo, overlays and laces * Not intended for use as Personal Protective Equipment (PPE) * Weight: Approx. 251 g/8.8 oz (Women's US 8) * Heel-to-toe drop: 10 mm * MR-10 Last - Our best, most consistent fit (same as Pegasus 40) * Crafted for performance and planet, 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. The carbon footprint of ReactX is based on cradle-to-gate assessment reviewed by PRé Sustainability B.V and Intertek China. Other midsole components such as airbags, plates or other foam formulations were not considered.