Whether you're training for a marathon or just enjoying a casual run, the Nike Pegasus Premium is the ideal all-round running shoe. Experience the ultimate performance of the Pegasus Premium every day. Midsole The midsole is made of ReactX foam. Compared to Nike React foam, ReactX is designed to reduce the carbon footprint of a pair of midsoles by at least 43% due to the reduced energy used in the manufacturing process, and to increase energy return by 13%. The midsole of this shoe features a Zoom Air Unit that absorbs shock and rebounds quickly, reducing stress on muscles, joints and tendons. Zoom Air Units allow for faster, more efficient energy transfer, so you can jump higher and run faster. Upper The upper of the Pegasus Premium is made of mesh for good breathability. Outsole The shoe has a rubber outsole and offers good grip and traction while running. Order and discover the versatility of the Nike Pegasus Premium within a few days.