adidas Ultra Boost 21 Tokyo - UK 9.5

The Ultra Boost cushioning provides excellent energy return and a highly responsive, comfortable feel, absorbing impact effectively during runs.

Yes, the Ultra Boost 21 Tokyo is well-suited for marathon running due to its superior cushioning and comfort for long distances.

While comfortable for walking and light gym activities, these shoes are primarily optimized for running. For heavy lifting or lateral movements, a different type of shoe might be more appropriate.

The 'Tokyo' edition features a unique colorway and design elements inspired by Tokyo, offering a distinct aesthetic compared to the standard models.

The Boost cushioning is known for its durability and resistance to temperature changes, maintaining its performance characteristics over many miles. However, like all shoe components, it will eventually wear down with extensive use.

No, the Primeknit upper is designed for breathability and flexibility, not waterproofing. It will allow water to pass through in wet conditions.

It is recommended to refer to adidas's official sizing chart for the most accurate fit. Many users find the Ultra Boost line to run true to size, but personal preference for snugness can vary.

Ensure laces are adjusted correctly. The Primeknit upper may require a short break-in period to mold to your foot. Try loosening the laces around the midfoot.

Over time, cushioning can naturally decrease. Ensure the shoes are not excessively worn. Check for any debris lodged in the Boost midsole, which can affect feel.

While the Continental™ Rubber outsole offers good grip, wet surfaces inherently reduce traction. Run with caution and consider dedicated trail shoes for very slippery conditions.

Avoid snagging the upper on sharp objects. If minor tears occur, consider a fabric repair adhesive. Ensure proper cleaning methods are used to avoid material degradation.