Nike Free RN Motion Flyknit Men's Natural Running Shoes Grey/Black/Volt

Details:
Weight: 189 grams (men's sizes 8 US - 41 EU)
Drop: 4 mm

Nike Free technology for natural movement and greater flexion of the foot
Flyknit uppers for breathability and freedom of movement during the stride
Flywire cables intertwined with the upper for a snug and secure fit
Rubber inserts in full under the toe and heel for durability and traction
Strategic areas of high breathability, flexibility and resistance
Midsole with dual density foam that offers enhanced cushioning
Midsole and outsole with revolutionary pattern star for superior dynamics and natural expansion

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.

Free
Nike Free are different from traditional athletic shoes. They’re designed to let your feet move much more freely and naturally, which means your muscles will be doing a bit more work than demanded of them in some other athletic shoes.

Flyknit
It uses a knitted upper construction process that increases support for a comfortable, custom fit. Seams, weight and friction areas are all reduced. Polyester yarn is more open in areas that need more flexibility and tighter in areas that require more support. Nike Flyknit also eliminates the need for multiple materials used to make traditional shoe uppers, significantly reducing pollution.