Nike Free RN Distance Light Blue

Phylon
Compression molded foam midsole for dual-density cushioning.

Flywire
Flywire helps provide ultra-lightweight support and comfort for your foot. It gets its strength from thin nylon fibers strategically placed on the upper of the shoe to hold the foot in place, helping to reduce slippage during activity. This allows for a massive reduction in weight because material is used only where it’s needed.

Lunarlon
Lunarlon cushioning features a soft, yet resilient foam core encased within a supportive foam carrier for lightweight, ultra-plush cushioning, springy response and support. This innovative foam, invented at Nike and 30 percent lighter than traditional Phylon, allows the force of impact to be more evenly distributed and helps reduce painful pressure points on your foot.