The adidas Adizero Boston 12 is a comfortable, fast shoe. The shoe is designed for runners who want to get the most out of their training and competitions. The Adizero Boston is ideal for competitions up to half a marathon distance and for interval and tempo training. Accelerate to victory with this competition shoe, designed for top performance in every race! 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 has EnergyRods 2.0, carbon tubes that mirror the metatarsal bones and follow the anatomy of the forefoot. The Energy Rods reduce energy loss during push-off. This makes the energy return high and this ensures an explosive push-off to the forefoot. Upper The Engineered Mesh upper provides support in strategic places around the midfoot and has high breathability in the forefoot. In the upper, adidas also uses 50% recycled materials to reduce the impact on the environment. Outsole Premium Continental Rubber outsole takes you further. This type of rubber provides good grip, no matter the conditions while running. You'll feel every step bringing you closer to the finish line in the adidas Adizero Boston 12, with maximum grip, optimal cushioning and a lightweight design.