Nike Men's ReactX Infinity Run 4 PRM Size (US Men):10.5 while the Dynamic Fit collar

while the Dynamic Fit collar and internal bootie create a secure

while zippered hand pockets and an adjustable waistband keep things functional and secure

and a modern athletic fit

Stay cool and move freely—get yours today

From daily training to recovery runs

Nike Men's ReactX Infinity Run 4 PRM Size (US Men):10.5 while the Dynamic Fit collarNike InfinityRN 4 PRM Reflective Comfort for Winter Runs Designed to handle winter conditions, the Nike InfinityRN 4 PRM delivers maximum cushioning and a smooth ride with ReactX foam underfoot. Its rocker shaped platform supports a natural stride, while the plush collar and tongue add comfort for long miles. Reflective detailing across the midsole and upper enhances visibility in low light, helping you stay seen on early morning or evening runs.