adidas Adizero Boston 12 - Black - UK 11

These shoes are best suited for speed training, tempo runs, interval workouts, and long-distance training where the goal is to maintain a faster pace and improve stamina. They are designed for a 'race-day' feel in training.

While comfortable, the Adizero Boston 12 is engineered with a focus on performance and 'tuned stiffness' for running efficiency. They might not offer the ultra-plush comfort typically sought for casual, everyday walking or standing for long periods.

ENERGYRODS are strategically placed rods within the midsole designed to provide a system of 'tuned stiffness.' They limit energy loss during toe-off, propelling you forward more efficiently and enhancing your running economy.

Lightstrike is adidas' most resilient cushioning material. It offers a balance of lightweight responsiveness and durability, providing a fast, snappy, and energetic feel underfoot, essential for faster running paces.

No, the use of at least 50% recycled content in the upper of the Adizero Boston 12 does not compromise performance. It's an adidas initiative to reduce plastic waste while maintaining the high standards expected from their performance running footwear.

The shoe features a 'Regular fit' designed to accommodate most foot shapes comfortably. The lightweight mesh upper and lace closure allow for a secure and adaptive fit that cinches down during high-speed efforts.

Yes, the Adizero Boston 12 is an excellent choice for both training for and racing marathons and half-marathons. Its combination of resilient cushioning, energy return, and propulsive elements makes it suitable for sustained fast efforts over long distances.

The Adizero Boston 12 features 'tuned stiffness' from ENERGYRODS for propulsion. This is an intentional design. Allow a few runs for your feet to adapt. If discomfort persists, ensure proper sizing.

Re-evaluate your lacing technique to ensure a secure fit. Try different lacing patterns, such as a runner's knot, to improve heel lock and midfoot security. Ensure you are wearing appropriate running socks.

Ensure the shoes are clean and free of debris. While designed for durability, cushioning materials can compress over extensive mileage. Consider if the shoes have reached the end of their optimal lifespan for performance running, typically 300-500 miles depending on use.

This can sometimes occur if there's moisture trapped between the outsole and a smooth surface. Ensure the shoes are dry. Check for any small debris lodged in the outsole grooves. If the squeaking is consistent, it might be a manufacturing issue, contact support.