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? - 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. 275 g/9.7 oz (Women's US 8). Heel-to-toe drop - 10 mm. Reflective details. Not intended for use as Personal Protective Equipment (PPE).