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-fiber 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 limit energy loss.-Lightstrike Pro cushioning.