The i-Run team says
Technologies
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Flyknit
The Nike Flyknit technology uses ultra-strong fibers to create lightweight pieces that provide targeted areas of support, elasticity, and breathability.
Flywire
The Flywire cables (braided polyester threads for maximum resistance, similar to cables on a suspension bridge) wrap around the midfoot and integrate with the laces for remarkable support, stabilizing and locking your foot during explosive movements.
Nike React
Nike React cushioning provides extraordinary responsiveness. When your foot touches the ground, the foam responds to the impact of your step by returning to its shape. The more energy you put into your step, the greater the energy return will be.
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