adidas UltraBoost 21 'Tokyo' - White - 7.5

The UltraBoost 21 'Tokyo' features 6% more Boost capsules in the midsole compared to older versions, providing an even more responsive and cushioned ride. It also uses a specific Primeknit construction derived from recycled ocean plastic.

Yes, the enhanced cushioning and energy return make the UltraBoost 21 'Tokyo' an excellent choice for marathon training and racing.

While they are designed for running, the comfort and cushioning make them suitable for casual wear and walking.

The Primeknit upper offers a snug fit. Ensure there is enough room in the toe box and no pinching at the heel. It's recommended to try them on if possible, or refer to the brand's sizing chart.

This construction offers a breathable, flexible, and comfortable fit while contributing to environmental sustainability by utilizing recycled materials.

Clean with a damp cloth and mild soap for the upper and midsole. Allow to air dry naturally. Avoid machine washing or high heat.

The UltraBoost series provides good cushioning and a degree of stability, which can be beneficial for many runners, including those with flat feet. However, individual needs vary, and a gait analysis might be helpful.

Loosen the laces, especially around the midfoot. The Primeknit upper will conform to your foot over time with wear.

Ensure the Boost midsole is clean. While Boost technology is durable, extreme dirt or damage could subtly affect performance. Check for significant wear on the outsole.

Minor snags can sometimes be carefully trimmed with small scissors. For tears, immediate repair or replacement may be necessary to prevent further damage.