Nike Men’s InfinityRN 4

Brand: Nike

The Nike InfinityRN 4 is built around an all-new ReactX foam midsole that provides 13% more energy return than standard Nike React foam, keeping legs feeling fresh over long distances. Nike’s best-fitting Flyknit upper wraps the foot in a soft, breathable embrace, while a wider toe box enhances natural stability and security with every stride. The shoe’s rocker-shaped foam profile supports all three phases of the running gait — lift-off, mid-stance, and ground contact — for a smooth, efficient ride mile after mile.

Key Features

• All-new ReactX foam midsole for 13% greater energy return vs Nike React foam
• Best-fitting Nike Flyknit upper for soft breathability and secure stretch support
• Wider toe box for natural foot splay, stability and comfort on long runs
• Rocker-shaped foam midsole supports lift-off, mid-stance and ground contact phases
• ReactX foam reduces midsole carbon footprint by at least 43% vs Nike React foam

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