Nike ReactX Infinity Run 4 - Grey - UK 10

The Nike InfinityRN 4 reimagines a classic running shoe by integrating brand new Nike ReactX foam....

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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 a high-performance running shoe tailored for adult male runners seeking a balance of consistent cushioning and responsive energy return. Featuring the advanced ReactX foam midsole and a breathable Flyknit upper, this model is designed to support longer, more efficient miles. While it offers industry-leading stability and a reduced carbon footprint, users should note that the specialized foam construction is engineered specifically for paved surfaces and standard road running training.

All features

Age Groupadult
ColourGrey
GenderMale
Shoe Size UK10
SeriesReactX Infinity Run
Model Part NumberDR2665-011
BrandNike

Extended Product Information

FAQs

Is the ReactX Infinity Run 4 suitable for flat feet?

Yes, the intuitive support architecture is designed to offer stability for a variety of foot types, including those requiring extra support.

How does ReactX differ from standard React foam?

ReactX provides 13% more energy return and is manufactured in a way that reduces the carbon footprint by 43%.

Can I put these shoes in the washing machine?

No, machine washing can damage the adhesive and structural integrity of the Flyknit upper and foam midsole.

Are these shoes waterproof?

No, the Flyknit upper is designed for maximum breathability and is not waterproof.

What is the primary use case for this shoe?

These are road-running trainers intended for daily training, long runs, and building mileage.

Troubleshooting

Upper material feels too tight across the midfoot

Adjust the lacing system to allow for more volume across the instep or try thinner performance socks.

Foam feels firmer than expected after first use

ReactX foam may require a break-in period of 20-30 miles to reach its maximum responsiveness and flexibility.

Pros and Cons

Pros

  • Significantly improved energy return over older React models
  • Highly breathable Flyknit material keeps feet comfortable
  • Environmentally conscious design with lower carbon impact
  • Provides stable and consistent ride for daily mileage
  • Durable cushioning suitable for high-frequency use

Cons

  • Not intended for trail running or technical off-road terrain
  • Requires break-in period for optimal foam response
  • Limited to road-focused performance features

Setup, Compatibility & Care

To ensure the longevity of your Nike ReactX Infinity Run 4, proper care is essential. Since the shoe features a technical Flyknit upper, avoid using harsh chemicals or abrasive brushes during cleaning.

  1. Cleaning: Gently wipe the upper with a damp cloth and mild soap. Air dry in a cool, shaded area away from direct heat sources, which can warp the foam.
  2. Storage: Keep the shoes in a well-ventilated space to allow moisture to evaporate fully between runs.
  3. Compatibility: These trainers are standard UK sizes; however, given the snug nature of Flyknit, consider wearing thin, moisture-wicking performance socks for the best fit.
  4. Rotation: If you run every day, consider rotating these with another pair of shoes to allow the foam to fully decompress and recover its shape.

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