Nike React Infinity Run Flyknit 4: first impressions
The Nike React Infinity Run Flyknit 4 (also known as the Nike InfinityRN 4) is a highly cushioned and good-looking road running shoe. Its sock-like construction means the upper stretches to fit your foot, with different patterns used in different places to adjust the amount of 'give'. Looking at the upper, you'll see stripes of more densely woven material across the top of the foot, resulting in less stretch, while the end of the toebox is much more yielding.
