InfinityRN 4 Shoe Size:8.5 Designed to improve visibility in

Designed to improve visibility in low-light conditions

fitted heel cup that won't slip

CenterPath TechnologyMore InformationA transformational approach to stability

Stay in RhythmCarbon fiber plate delivers a propulsive sensation and a smooth transition at a variety of paces

Nike AeroBill technology combines breathability with sweat-wicking comfort to help reduce distractions

InfinityRN 4 Shoe Size:8.5 Designed to improve visibility inWith supportive cushioning built for a smooth run, the Nike InfinityRN 4 is a brand new take on a familiar favorite. It's made from our all new Nike ReactX foam, which gives you 13% more energy return compared with Nike React foam, to help you stay fresh and bouncy. (What's more? Nike ReactX reduces its carbon footprint in a pair of midsoles by at least 43% compared to Nike React foam.*) We coupled the ReactX foam with Nike Running's best fitting