Nike ZoomX Invincible Run Flyknit 3 - White - Blue - DR2615-100 - Size UK 7

The ZoomX foam provides exceptional cushioning and superior energy return, offering a soft yet responsive feel with every stride.

Yes, the high level of cushioning and energy return makes the ZoomX Invincible Run Flyknit 3 an excellent choice for marathon training and the race itself, especially for runners who prioritize comfort.

The Flyknit upper is engineered with zones of breathability placed in high-heat areas, ensuring optimal airflow to keep your feet cool and comfortable during runs.

This version features a sleeker design, a smaller heel clip for enhanced structure with a streamlined look, and a wider midsole for increased stability.

While they offer energy return, their primary design is for comfort and cushioning. For dedicated speed workouts, a lighter, more performance-oriented shoe might be preferred. However, they can still be used for moderate-paced efforts.

The outsole is made of durable rubber with a lattice pattern. This design allows the foam to expand and react, enhancing flexibility and providing reliable traction on various surfaces.

Clean the shoes using a soft brush or a damp cloth to remove dirt. Avoid machine washing or using harsh detergents. Allow them to air dry naturally away from direct heat.

This can sometimes occur with new foam. Try running a few miles to break them in. If the sound persists, check for debris trapped in the outsole grooves.

Ensure the laces are tied correctly for a secure fit. The wider platform provides stability, but proper lacing is crucial. If instability persists, consider your gait and consult a running specialist.

While the Flyknit is designed for breathability, very high temperatures or intense efforts might increase heat. Ensure socks are also moisture-wicking. The shoe's primary focus is cushioning.