The Pegasus Premium supercharges responsive cushioning with a triple stack of our most powerful running technologies: ZoomX foam, a sculpted Air Zoom unit and ReactX foam. It's the most responsive Pegasus ever, providing high energy return unlike any other. With a lighter-than-air upper, it decreases weight and increases breathability so you can fly faster. Engineered mesh upper We took our best practices from the Peg's past, while still seeking a minimal feel. This breathable, lightweight engineered mesh helps keep you contained without sacrificing durability and comfort. Springy ZoomX foam Your foot sits on top of soft, springy full-length ZoomX—Nike's lightest, most resilient and responsive foam—delivering incredible energy storage and return. Full-length Air Zoom The full-length Air Zoom unit offers our optimal level of springiness underfoot, unlocking a level of speed and responsiveness that'll put pep in your miles. ReactX foundation Responsive, supportive ReactX foam sits at the bottom of the ZoomX and Air Zoom, offering a smooth and balanced ride. It acts as a moderator of sorts for the two high-level speed components. Neutral support The Peg Premium has neutral support that gives you balance, whether you're a heel or forefoot striker. It's good for long and short runs, providing smooth heel-to-toe transitions. What's new? * The ReactX foam midsole is 13% more responsive than previous React technology. * Modified Waffle outsole has high-abrasion rubber to provide traction. Product details * Weight: approx. 275g (women's size 5.5) * Heel-to-toe drop: 10mm * Reflective design details * Not intended for use as personal protective equipment (PPE) Crafted for performance and planet The 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 with 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.