- Photon Dust/metallic Silver-black Sneakers - Circular knit upper helps keep you cool mile after mile - ZoomX foam in the midsole and ReactX foam in the heel create a new cushioning system for high energy return and peak responsiveness - Nike sculpted a full-length Air Zoom unit so you can use the power of Air from heel strike to toe off - A modified Waffle outsole with high-abrasion rubber provides durable traction - Heel-to-toe drop: 10mm - Reflective details - SKU: IR1229-001 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 our most responsive Pegasus, providing high energy return unlike any other. With a lighter-than-air upper, it decreases weight and increases breathability so you can fly fast.