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Nike InfinityRN 4

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description Nike InfinityRN 4 Overview

The Nike InfinityRN 4 utilizes ReactX foam and a rocker geometry to deliver a cushioned ride designed to mimic the feeling of running on soft surfaces and reduce impact forces.

help Nike InfinityRN 4 FAQ

What is the difference between Nike ReactX and standard React foam?

ReactX is Nike's updated foam formulation introduced recently, offering a softer, more responsive ride while reducing the carbon footprint of manufacturing by roughly 43% compared to standard React. The InfinityRN 4 utilizes this new foam to provide maximum cushioning.

Is the Nike InfinityRN 4 good for overpronation?

While historically marketed as a stability shoe (the Nike Infinity React), the InfinityRN 4 leans heavily into the "max cushioning" category with a wide, stable base. It does not use stiff stability posts, relying instead on a broad platform and rocker geometry to guide a smooth stride.

How does the InfinityRN 4 compare to the Nike Pegasus 40?

The InfinityRN 4 features a thick layer of ReactX foam that is softer and higher off the ground, making it better for slow, easy recovery runs. The Pegasus 40 uses React foam without the "X" formulation and sits lower to the ground, offering a firmer, more versatile daily trainer feel.

Can you use the Nike InfinityRN 4 on a treadmill?

Yes, the high stack of cushioning and the smooth rocker transition in the InfinityRN 4 make it an excellent choice for treadmill running. The soft foam helps absorb the repetitive impact of the belt, reducing fatigue on longer indoor runs.

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