The React Infinity Run 4 – now upgraded as the ReactX InfinityRN 4 – is built for runners who refuse to slow down. With even softer, more energetic ReactX foam than before, a refined Flyknit upper that hugs your foot like a second skin, and proven injury-preventing rocker design, this is the everyday shoe that keeps you running longer and feeling fresher. Whether you're chasing PBs or just love that “cloud-like” feel on your daily miles, the InfinityRN 4 delivers premium cushioning without the weight. Trusted by thousands of runners worldwide – grab yours and feel the difference from the first stride.
ReactX foam midsole – 13% more energy return than standard React, insanely plush yet responsive
Wider, rocker-shaped platform proven to reduce injury risk and smooth out every transition
Updated Flyknit upper – super breathable, secure fit that moves with you mile after mile
Enhanced heel clip & midfoot support for confident stability, even on longer runs
Durable rubber outsole with strategic traction – grips roads and light trails without wearing fast
Lightweight at just ~295g (men’s UK9) – you’ll forget you’re wearing them until you check your watch
Sleek, modern look that works from morning runs to weekend coffee stops
Available in men’s & women’s sizing – true to size, with wide options on selected colours
Ready to run farther and feel better doing it? Add the React Infinity Run 4 to your cart today and join the thousands already loving the InfinityRN 4 difference. Limited stock in popular colours – don’t wait
