Nike ReactX Infinity 4 Trainers - White - Black - 8

Yes, the ReactX foam is designed specifically for the high-mileage requirements of long-distance training.

Yes, the stable base and traction are sufficient for gym workouts, including weight training and treadmill use.

These trainers generally fit true to size. We recommend measuring your foot in the afternoon when it is at its largest.

Yes, the Infinity series is designed with stability features to support a neutral to slightly pronated gait.

Under normal running conditions, you can expect between 300 to 500 miles of performance before the foam begins to lose its initial responsiveness.

Ensure the laces are not tied too tightly across the bridge of the foot, or consider adjusting the insole position.

Use a 'runner's loop' lacing technique to better secure the heel collar to the ankle.

ReactX foam can feel firmer in very cold temperatures; allow the shoes to reach room temperature before use.