Nike React Infinity Run Flyknit 2 Trainers - Black - UK 8.5

The Nike React Infinity Run Flyknit 2 is designed with stability features intended to help reduce pronation and guide the foot in a more natural motion. However, for severe pronation issues, consulting with a running specialist is recommended.

A proper fit should allow about a thumb's width of space between your longest toe and the front of the shoe when standing. The heel should feel secure without slipping, and there should be no pinching or excessive pressure points.

While they offer comfort and some stability, these trainers are optimized for running. For specific gym activities like weightlifting, shoes with a flatter, more stable base might be more suitable. They are generally fine for general fitness or treadmill use.

The lifespan of running shoes varies based on usage, running surface, and individual biomechanics. For the React Infinity Run Flyknit 2, runners typically get between 300-500 miles (approximately 480-800 kilometers) before performance or cushioning significantly decreases.

The Flyknit upper is designed for breathability and is not waterproof. It will allow air to pass through, but it will also absorb moisture from rain or puddles.

The Flyknit 2 generally features updates to the upper for a more secure and comfortable fit, potentially enhanced foam formulations for a slightly different feel, and updated outsole designs for improved durability or traction compared to previous models.

This can sometimes occur due to friction between the insole and the shoe's interior. Try removing the insole, cleaning both it and the inside of the shoe, and then reinserting the insole. Ensure it's properly seated.

Ensure the laces are adjusted correctly for a secure but not overly tight fit. Try different lacing techniques or consider if the shoe's shape is not a perfect match for your foot type. Ensure you are wearing appropriate socks.

Check the outsole for excessive wear or embedded debris. Clean the outsole with a damp cloth. If the wear is significant, the shoe may be nearing the end of its lifespan for optimal grip.