Nike React Element 55 Sizing – What's The Verdict? FIT: The Nike React Element 55 runs true to size, get your normal size and you'll be fine!

Does Nike react Infinity run small?

Overall, the upper works and runs true to size, but there are some shortcomings. The midsole is made of that sweet sweet energy-returning, lightweight React foam. Nike spreads the midsole out wider in every direction (except for the midfoot) to give the runner a stable base.

Should I size up or down for Nike?

Nike. Nike is pretty well-known for running small, particularly their shoes. Unless you have narrow feet, you will almost certainly want to order a size larger. Those with particularly wide feet may need to go up 1 ½ sizes.