- 4-way stretch knit upper expands and contracts with your foot.
- Dual-density Solarsoft foam cushions every step.
- Textured for traction heel-to-toe with hot-knife siping.
- Synthetic overlays around the laces provide structure for a secure fit.
- Heel and tongue loops stretch the opening so your foot easily slides in.
The Nike Flex RN 2019 brings stretch to your run. A stretchable knit upper wraps you in softness as it expands and contracts along with your foot. Dual-density foam layers supply durable cushioned comfort, while hot-knife grooves on the outsole give you flexibility heel-to-toe.
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