Whether you're training for a marathon or just enjoying a casual run, the Nike Air Zoom Pegasus 41 is the ideal all-round running shoe. Experience the ultimate performance of the Air Zoom Pegasus 41 every day. Midsole The midsole of this shoe is made of ReactX foam. ReactX is a light, firm foam for a smooth, responsive ride with much less impact. With 13% more energy return and 43% less carbon emissions than regular React foam. Zoom Air Units are incorporated into the midsole. These absorb shock and bounce back quickly. This reduces the strain on your muscles, joints and tendons. You can run faster and jump higher with the Zoom Air Unit because it transfers energy more efficiently. Upper The upper of the Air Zoom Pegasus 41 is made of mesh for good breathability. Outsole The shoe's rubber outsole provides good grip and traction while running. The forefoot has extra flexibility due to the flex grooves in the outsole and this ensures a smooth way of walking. This shoe has Nike's characteristic waffle pattern as an outsole, with short rubber studs in the shape of honeycombs, for grip on wet and dry surfaces. Order and discover the versatility of the Nike Air Zoom Pegasus 41 within a few days.