Nike React Infinity Run 4 - Trainers - UK 6.5

ReactX foam provides a softer feel and greater energy return compared to the original React foam, while also reducing the foam's carbon footprint.

The Nike React Infinity Run 4 offers a balanced amount of support and cushioning, but it's designed as a neutral shoe. Runners with significant pronation might benefit from consulting a running specialist for tailored recommendations.

Refer to Nike's official sizing guide or try them on in-store. Ensure there is a thumb's width of space between your longest toe and the end of the shoe when standing.

The Infinity Run 4 introduces the new ReactX foam for enhanced cushioning and responsiveness, along with updates to the upper for improved fit and breathability compared to previous models.

Yes, the Nike React Infinity Run 4 is well-suited for marathon training due to its superior cushioning and comfort for long distances.

The lifespan varies based on usage, but generally, running shoes like these are recommended for replacement every 300-500 miles or when cushioning feels significantly diminished.

Adjust the lacing pattern. Ensure you are wearing appropriate athletic socks. If the fit issue persists, consider trying a different size.

The ReactX foam is designed for longevity, but performance may decrease after extensive use (typically 300-500 miles). Consider replacing the shoes if they no longer provide adequate cushioning.

Ensure proper fit and lacing. Verify you are using the correct size for your foot. If discomfort persists, it might indicate the shoe is not suitable for your specific gait or running style.