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 on Upper - Breathable, lightweight engineered mesh helps keep you contained. ZoomX Foam - Your foot sits on top of full-length ZoomX foam, Nike's most responsive foam. It delivers incredible energy return with each stride. Full-Length Air Zoom Cushioning - 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 Foam Foundation - ReactX foam, 13% more responsive than previous React technology, sits at the bottom of the ZoomX foam and Air Zoom cushioning. It offers a smooth and balanced ride. Modified Waffle Outsole - Modified waffle outsole has high-abrasion rubber to provide traction. Product Details - Weight - Approx. 275g/9.7oz (Women's US 8). Heel-to-toe drop - 10mm. Not intended for use as Personal Protective Equipment (PPE).