Nike Air VaporMax 2020 Flyknit - Summit White - UK 8.5

While the VaporMax Air unit offers excellent cushioning, these shoes are primarily designed for lifestyle wear and light training. For marathon running, dedicated marathon shoes with specific support and cushioning might be more appropriate.

The shoes should fit snugly but comfortably, with enough room in the toe box. The Flyknit upper will adapt to your foot shape. It's recommended to try them on, especially if you are between sizes or have wider feet.

It is strongly advised NOT to machine wash the Nike Air VaporMax Flyknit. The materials, especially the Flyknit and Air cushioning, can be damaged by the washing machine's agitation and heat.

Flyknit is a textile technology developed by Nike that uses polyester yarn to create a lightweight, breathable, and form-fitting one-piece upper. It's designed to act like a second skin.

Recycled TPU is engineered for durability and performance, similar to virgin TPU. It is designed to withstand regular wear and tear for its intended use as footwear components.

FlyEase technology provides a quick, easy, and consistent fit without traditional laces. It's particularly beneficial for athletes who need to adjust their shoes quickly or for individuals who find lacing challenging.

Ensure your foot is fully inside the shoe before attempting to tighten the strap. Check for any debris that might be obstructing the mechanism. Refer to the Nike FlyEase instructional guides if needed.

This can sometimes occur due to the unique nature of the full-length Air unit. Ensure the shoes are properly broken in. If the issue persists, check for any leaks or damage to the Air unit.

This can happen if moisture gets trapped between the outsole and the Air unit. Ensure the shoes are completely dry. A light dusting of talcum powder under the insole might help.