Nike ReactX Infinity Run 4 - White - UK 8.5

Measure your foot length from the heel to the tip of your longest toe. If your foot length falls between two sizes, choose the larger size. Remember that individual foot variations can affect fit.

The ReactX Infinity Run 4 is ideal for daily training runs, long runs, and recovery runs due to its balanced cushioning and support.

Clean them using a soft brush or cloth with mild soap and cold water. Allow them to air dry completely, away from direct heat. Do not machine wash.

ReactX foam offers enhanced energy return and improved cushioning compared to previous Nike foam technologies, leading to a more responsive and comfortable ride.

While it offers good responsiveness, the ReactX Infinity Run 4 is primarily designed for training and daily mileage rather than high-performance racing, where lighter, more aggressive shoes might be preferred.

While the shoes are built for running performance, their comfort and support features may make them suitable for casual wear for some individuals. However, their primary design is for running.

Adjust the lacing. For a tighter fit, ensure laces are snug. For a looser fit, loosen the laces, particularly around the midfoot and forefoot. If the length is incorrect, consider if you need a different size based on the sizing guide.

The ReactX foam is designed for durability, but performance may gradually decrease with very high mileage. Consider replacement after 300-500 miles or when noticeable changes in cushioning occur. Ensure the shoes are clean, as debris can affect feel.

The outsole provides traction, but performance on extremely wet or slick surfaces may be reduced. Run with caution on such surfaces. Ensure the outsole is free of debris that could impede grip.