Nike Air Zoom Alphafly NEXT% 2 Prototype - Trainers - White/Black

While they offer excellent cushioning, the Alphafly NEXT% 2 is primarily designed as a racing shoe for maximum performance. For daily mileage, it's recommended to use a more durable trainer to preserve the advanced technology in the Alphafly.

The shoe should feel snug, particularly around the midfoot and heel, with ample room in the toe box for your toes to splay. Try them on with the type of socks you typically run in and walk around to check for any discomfort or pressure points.

The Alphafly NEXT% 2 features an updated midsole foam compound and a slightly revised upper for improved durability and fit compared to the original model. The core racing technology remains similar.

The Zoom Air pods are designed to be durable for the lifespan of the shoe. Their performance is integrated with the midsole foam and carbon plate, and they should maintain their responsiveness throughout the shoe's intended mileage for racing.

The shoes can handle light moisture, but the outsole grip is optimized for dry surfaces. Excessive water can affect traction, and prolonged exposure to wet conditions is not recommended for the longevity of the materials.

Nike typically offers a limited warranty against manufacturing defects. Please refer to Nike's official website or the retailer's policy for specific warranty details and duration.

Most users find Nike running shoes, including the Alphafly line, to run true to size. However, personal preference for fit can vary. It's always best to consult size charts and consider trying them on if possible.

This can sometimes occur due to air movement within the Zoom Air units or foam compression. Ensure laces are tied properly to secure the foot. If persistent and concerning, contact customer support.

Check that the laces are tied securely and that the shoe fits snugly. Ensure the outsole is free from debris. If the issue persists, the shoe may not be suitable for your foot strike or running style.

Adjust the lacing technique to achieve a personalized fit. The AtomKnit upper is designed to be snug; experiment with different lacing patterns to find what works best for your foot shape.