Gently Used Nike Flex 2017 Run shoes in all black. No rips or tears. Smoke/Pet free home. Original Box not included. The Nike Flex 2017 RN Women’s Running Shoe helps keep you light on your feet from start to finish with an engineered mesh upper and lightweight flexible outsole. Engineered mesh upper is breathable where you need it most. Flywire technology delivers midfoot lockdown. Dual-density foam midsole/outsole for lightweight comfort.