The Boston Marathon is a race.But it´s also a goal, and a training plan and all the days it stays on your mind before the big one.The Adizero Boston 12 Shoes are built for mid- to long-distance running.They bring a race-day feel to training with a propulsive feel that comes from the glass-fibre infused ENERGYRODS 2.0, which limit energy loss underfoot.They´re fast, but that does not come at the cost of durability — the midsole layers ultra-light LIGHTSTRIKE PRO cushioning with a new version of durable LIGHTSTRIKE 2.0 EVA.FEATURES:-Regular fit.-Lace closure.-Lightweight mesh upper.-Textile lining.-ENERGYRODS 2.0 limit energy loss.-Lightstrike Pro cushioning.-Weight:260 grams (size UK 8.5).-Midsole drop:7 mm (heel:38 mm / forefoot:31 mm).-Continental™ Rubber outsole.-Upper contains a minimum of 50% recycled content.TECHNOLOGIES:-Take on your tempo training runs with a breathable fit.Experience targeted support from engineered key zones, providing both midfoot lockdown and forefoot flexibility.-A holistic structure system designed for a seamless transition from heel to toe, bringing race-day performance to high-speed training runs.-A layered midsole construction made of our high-performance foam Lightstrike Pro plus the all-new Lightstrike 2.0, engineered to deliver a cushioned and dynamic ride.The Continental™ outsole provides superior grip in the most demanding conditions.-Made with at least 50% recycled materials in the upper, this shoe represents just one of our solutions to help end plastic waste.