Nike InfinityRN 4 Women's Neutral Running Shoes Black/White/Dark Grey

Details:

• This model has a more snug fit than the previous version. We recommend buying half a cm more than your usual size
• Ideal for runners looking for cushioning and responsiveness for both training and recovery runs
• Lightweight and stretchy upper in Flyknit mesh that wraps the foot like a sock, ensuring constant comfort and ventilation. The water-repellent toe lining gives added protection from light rain
• Midsole in Nike ReactX with rocker design, a new compound that returns 13% more energy and supports the foot even better in every phase of the stride. This foam also reduces the environmental impact by 43%
• Sole with Waffle tread in thicker anti-abrasion rubber and with a wider support base that gives sensational grip and stability
• Containment clip on the back of the heel that stabilizes the stance phase
• Laterally heat-sealed inserts in synthetic material that help the foot always remain in position, especially during changes of direction
• Lightly padded collar for a softer feel at the ankle
• Flat laces integrated into the upper and Flywire system
• Thin tongue in Flyknit mesh that fits better to the back of the foot
• Device on the back to facilitate the fit
• Reflective details
• Shaped and removable insole

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.

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.