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The Nike ZoomX Invincible Run Flyknit is the first model with a midsole that’s 100% ZoomX. The Infinity Run Flyknit 3 has a softer, more bouncy midsole which is better suited for long, slow-paced runs.This is Nike’s new max-cushion shoe. In summary, the Pegasus 39 is firmer, more stable and has a more durable outsole. The Pegasus 39 has the more durable outsole.īoth the Infinity Run Flyknit 3 and the Pegasus 39’s midsoles are made from React foam which doesn’t lose much cushioning over the lifespan of the shoe compared to regular EVA foam. The Infinity Run Flyknit 3 has more rubber than the Epic React’s outsole but is not full coverage so the exposed react midsole gets scraped on the sides where there is no rubber. When it comes to the outsole, the Pegasus 39 has more rubber and uses thicker, harder rubber. In terms of stability, the Infinity Run Flyknit 3 has a more prominent arch than the Pegasus 39 but the Pegasus 39 is the overall more stable shoe due to the firmness and the lower stack height of its midsole.īoth shoes have very smooth ride transitions: the Pegasus 39 has a forefoot Zoom Air unit, heel Zoom Air unit and one-piece midsole, the Infinity Run Flyknit 3 also has a one-piece midsole but with no Zoom Air unit, making its ride smoother. The Pegasus 39 has a firm toe off which is needed for tempo runs. The Infinity Flyknit 3’s React midsole has plenty of deep cushioning and foot protection. The Pegasus 39 is better suited to short tempo runs whereas the Infinity React Flyknit 3 is better for long, slow runs. The React sole of the Infinity Run Flyknit 3 is much softer in comparison and less stable. The combination of firmer React foam and Zoom Air units in the Pegasus 39 makes it a firmer, stable feeling shoe with moderate amounts of responsiveness.
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The Pegasus 39 uses firmer React foam and Zoom Air whereas the Infinity Run 3 is made from lower density React foam. The sole units of these two shoes are like night and day even though they both use React foam.
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