Nike Air Zoom Structure 21 Running Shoes

Nike’s Air Zoom Structure 21 are outstanding training shoes, ideal for pronator runners in the mid-to-high weight range (up to 85 kg). Weighing less than 300 grams and sporting an excellent functionality, the Structure 21 will also be useful for runners who want more step stability in low-effort competitions.

In the Structure 21’s midsole you will find an advanced combination of technologies at your service; an Air Zoom unit in the heel area, Phylon cushioning along the forefoot and the foot’s outer side and Cushlon ST offering high compression in the inner side. With this triad, Nike offers in these shoes what they call Dynamic Support, helping your feet to not prone excessively as you run.

The outsole, flexible and texturized with a very advanced lattice of pentagonal cleats, increases support and helps you maintain a healthy tread dynamic. In addition, its Dynamic Fit upper - made up of Flywire cables with an internal arc-shaped band that provides a smooth sleeve-like feel around your feet - prevents slipping and provides a great, snug fit. The upper uses an extremely lightweight version of Flymesh to keep your feet cool and to protect them from elements and abrasion. Lighter and stronger than the previous version, the Nike Air Zoom Structure 21 Men´s Running Shoe provides the stability and support that made it a favourite. Softer, lightweight Flymesh material helps keep your feet cool, while responsive Nike Zoom Air cushioning in the forefoot gives you a snappy, springy feeling underfoot.


Breathable Comfort

The one-piece Flymesh fabric provides more ventilation across the top of your foot. This version of Flymesh has lighter materials that still provide strong support.

Secure Feel and Support

Combining Flywire with an internal arch band, Dynamic Fit technology provides stability that adapts to you. The top two eyelets are Flywire—strong yet ultralight cables that work with the laces to provide more support as you tighten them. Plus, an elastic band wraps around your arch to help keep your foot from sliding as you run.

Superb Stability

A wide, flat outsole and two types of cushioning offer stability. Firmer foam cushions the arch side of the foot, while a softer foam cushions the outer side. This creates the right amount of impact protection and stability for your stride.


Features:

- Forefoot Nike Zoom Air cushioning provides a responsive, springy step.
- Firm heel structure provides support.
- Rubber strip along the bottom of the shoe provides a smooth heel-to-toe step.
- Weight: 295g approx. (men´s size 9).
- Offset: 10mm.

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