The shoe gained around two ounces over last year's version, and instead of Boost, we now have a whole combination of stuff in the 38 mm/31 mm midsole, like Lightstrike Pro, Lightstrike, fiberglass energyRODS, and apparently a carbon plate in the heel which we didn't know about.

Adizero Running Shoes Frequently Asked Questions The adidas Adizero Pro includes a carbon plate for a propulsive feel. The Adizero racing line is always evolving, and other shoes in the family use carbon-infusedEnergyrods instead of a carbon plate.

Quicker runs, tempo runs and sessions is where this shoe excels, but I also found it great for some general running, it's also pretty grippy with continental outsole for compact gravel and light trail.

Our verdict. The Adidas Adizero Boston line saw a radical change with version number 10 when it got much bigger. As per our observations, the 11th iteration sees just a few differences and remains a maximal training shoe devoted to those runners who love a very firm ride and train for medium to long-distance races.