The Nike Flex 2017 RN 'Pure Platinum' sneaker helps your foot move with ease. Synthetic overlays are fused atop the engineered mesh upper. The light, but strong Vectran filaments in Flywire technology are strategically placed into the lacing system to help deliver an adaptive fit. The upper is supported by a rounded heel and rubber pods. Two levels of Phylon foam sit above the flexible tri-star patterned outsole.