The adidas Adizero Boston 12 is designed for runners who want to get the most out of their training and races and who want to cover many kilometers at a high pace. The Adizero Boston is a true speed demon that is best suited for races up to half marathon distance and during tempo and interval training. Designed for top performance in every race, this racing shoe accelerates you to victory! This product is part of adidas' Primegreen label. Primegreen consists of a range of high-performance materials, made from recycled components to deliver a more sustainable product. Midsole The midsole with Lightstrike 2.0 and Lightstrike Pro cushioning offers lightweight cushioning with increased energy return. The combination of these foam materials allows you to use the Adizero Boston during tempo training and competitions. The Lightstrike Pro foam provides high energy return while Lightstrike 2.0 ensures stability and good contact with the ground with every step you take. The adidas Adizero Boston features EnergyRods 2.0, which mirror the metatarsal bones and follow the anatomy of the forefoot. This reduces energy loss during push-off. This makes the energy return extremely high and ensures an explosive push-off to the forefoot. Upper In strategic places, the Engineered Mesh upper provides flexibility and breathability, while in other places the shoe fits a bit tighter. The shoe is a bit tighter around the midfoot for a safe and supportive feeling. The upper also consists of 50% recycled materials. In this way, adidas is trying to make its products increasingly sustainable. Outsole With every step you take, it's important to have good grip and for that this model has premium Continental Rubber. This type of rubber offers superior grip and traction with every type of run. You'll feel that every step brings you closer to the finish in the adidas Adizero Boston 12, with maximum grip, optimal cushioning and a lightweight design.