Nike ReactX Infinity Run 4 - White Chrome - UK 5

Measure your foot length from the heel to the longest toe. If your measurement falls between two sizes, it is recommended to choose the larger size for a comfortable fit.

Yes, the ReactX Infinity Run 4 is designed with enhanced cushioning and stability, making it suitable for long-distance runs and marathon training.

While they are primarily designed for running, their cushioning and support make them comfortable for activities like walking or general fitness training. However, they may not offer the specific lateral support needed for sports like tennis or basketball.

Use a damp cloth with a small amount of mild soap and cold water to gently clean any marks. Avoid harsh chemicals or machine washing.

The ReactX Infinity Run 4 features the new ReactX foam, which offers increased energy return and reduced environmental impact compared to the previous React foam, along with an updated stability design.

While the shoes are designed for immediate comfort, a short break-in period of a few runs is recommended to allow your feet to fully adapt to the shoe's fit and cushioning.

Adjust the lacing system. If persistently uncomfortable, double-check your foot measurement against the sizing chart. Consider trying a half-size up or down if possible.

Ensure the shoes are being used for their intended purpose. While ReactX foam is durable, excessive wear or use on abrasive surfaces can impact performance over time. Check for any debris within the midsole grooves.

Inspect the outsole for wear patterns. Running on harsh surfaces or improper gait can lead to premature wear. Ensure your running form is natural and avoid excessive friction.