Nike ReactX Infinity Run 4 Trainers - Grey - White - 9.5

The Nike ReactX Infinity Run 4 is a high-performance trainer designed to provide exceptional cushi...

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KICKSCREWNike Women's Photon Dust/White/Saturn Gold (Wmns) Reactx Infinity Run 4 ' Royal Pink' Dr2670-009
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Product Information

Full details

The Nike ReactX Infinity Run 4 is a high-performance trainer engineered for adult runners seeking a blend of plush comfort and reliable stability. Featuring the innovative ReactX foam, these shoes provide exceptional energy return and a smooth transition during daily training sessions. While they excel in long-distance comfort, users should note that the focus on high-stack cushioning may feel less ground-responsive compared to dedicated racing flats.

All features

Age Groupadult
ColourGrey
GenderFemale
Shoe Size UK9.5
Accent ColourWhite
Shoe TypeTrainers
SeriesReactX Infinity Run 4
Model Part NumberDR2670-009
BrandNike

Extended Product Information

FAQs

Are these shoes suitable for wide feet?

The ReactX Infinity Run 4 features a standard fit. While the material is flexible, those with very wide feet may prefer to try them on with their preferred running socks to ensure comfort.

Can these be washed in a machine?

We recommend hand washing with mild soap and water. Machine washing can damage the foam and adhesives used in the construction.

What is the primary difference between React and ReactX foam?

ReactX is an evolution of the original foam, specifically engineered to provide higher energy return and a more sustainable production process.

How often should I replace these trainers?

Generally, performance trainers should be replaced every 300 to 500 miles, depending on your running surface and body weight.

Do these provide arch support?

The design includes a supportive midsole architecture that offers stability for most neutral runners.

Troubleshooting

Heel slipping while walking or running

Try a 'runner's loop' lacing technique to secure the heel more firmly in the collar.

Foam feeling compressed after a long session

This is normal behavior for performance foam; let the shoes rest for 24-48 hours to allow the material to recover its shape.

Outer sole picking up small debris

Use a wooden toothpick or soft brush to gently clear pebbles from the tread grooves to maintain traction.

Pros and Cons

Pros

  • Excellent cushioning for long-distance comfort
  • Highly responsive foam delivers great energy return
  • Stable base suitable for diverse foot strikes
  • Clean and versatile grey and white aesthetic

Cons

  • High stack height may feel unstable on uneven technical trails
  • Not intended for fast-paced sprinting or race-day speed
  • Lighter colors like the white accents require more frequent cleaning

Setup, Compatibility & Care

Getting the most out of your Nike ReactX Infinity Run 4 requires proper fit and routine maintenance. Ensure you have chosen the correct UK size, as the supportive collar requires a snug heel lockdown to prevent slippage. When cleaning, remove loose dirt with a soft brush after your run. If they become saturated, stuff them with newspaper to help them dry naturally; do not place them directly on a radiator or in a dryer, as high heat can degrade the foam properties. To ensure optimal performance, rotate your trainers with another pair if you run daily to allow the foam to decompress fully between sessions.

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