Nike ReactX Infinity Run 4 - Grey - UK 8

The Nike InfinityRN 4 reimagines a classic model to deliver reliable cushioning and smooth support...

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KICKSCREWNike Men's Vast Grey/Hyper Violet/Bright Crimson Reactx Infinity Run 4 ' Bright Crimson' Dr2665-011
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Product Information

Full details

The Nike ReactX Infinity Run 4 is designed for male runners seeking a balance of reliable cushioning and smooth support for daily road running. Its primary benefit lies in the innovative ReactX foam, which provides enhanced energy return while maintaining a lower environmental impact, though the supportive structure may feel firmer than traditional maximalist trainers.

All features

Age Groupadult
ColourGrey
GenderMale
Shoe Size UK8
SeriesInfinity Run
Model Part NumberDR2665-011
BrandNike

Extended Product Information

FAQs

Is this shoe good for racing?

While highly capable for training and long runs, it is designed for comfort and support rather than explosive speed, making it better suited for daily training than race day.

Can I use these for trail running?

These shoes are optimized for road and pavement use and do not offer the protection or deep lugs required for technical trails.

How does ReactX differ from standard React foam?

ReactX foam provides 13% more energy return than standard React foam and is manufactured with a lower carbon footprint.

Is the Flyknit upper waterproof?

No, the Flyknit material is designed for maximum breathability and will allow water to pass through if running in heavy rain.

How long should these shoes last?

Depending on running style and surface, the cushioning and tread typically provide optimal performance for 300 to 500 miles.

Troubleshooting

Feeling pressure points on the top of the foot

Try adjusting the lacing pattern to a runner's loop to relieve pressure while maintaining a secure fit.

Shoes feel dirty or retain odor

Remove the insoles and hand wash them separately with mild detergent, then wipe the exterior with a damp cloth.

Pros and Cons

Pros

  • High energy return from ReactX foam
  • Breathable and supportive Flyknit upper
  • Sustainable manufacturing processes
  • Stable platform for daily training

Cons

  • May feel firm for runners seeking extreme softness
  • Flyknit material can feel tight for those with very wide feet
  • Limited to road and hard surface usage

Setup, Compatibility & Care

For optimal performance, ensure you are wearing socks that allow the Flyknit material to breathe. When fitting, the upper should feel snug but not restrictive. To maintain the shoes, avoid machine washing; instead, spot clean with a mild soap and a soft brush. Air dry away from direct heat sources, such as radiators, to prevent the foam from degrading or the materials from warping. Periodically check the outsole for debris lodged in the treads to maintain optimal grip.

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