Run in toe-to-heel comfort with the Boys Nike Flex RN 2017 Running Shoe. Its engineered, open-hole mesh upper provides a close, comfortable fit that breathes, while a dual-density foam midsole/outsole is grooved for flexibility. Features Open-hole mesh upper provides a breathable, comfortable fit. Dual-density midsole optimizes comfort, flex and durability. Deep flex grooves promote multidirectional flexibility. Rubber pods in the toe and heel provide durable traction.