Adidas Adizero Boston 12 Running Shoes Although the Boston Marathon is a race, it's also a goal; it requires a training plan and is on your mind every day leading up to the big day. The Adizero Boston 12 Shoes are designed for medium and long distance running. Bring a race-day feel to your workouts with the propulsion of ENERGYRODS 2.0, a glass-fiber-based material that reduces energy loss. It's fast, but it doesn't sacrifice durability for that. The layered midsole consists of ultra-lightweight LIGHTSTRIKE PRO cushioning and next-generation, durable LIGHTSTRIKE 2.0 EVA. Features Normal pattern Lace up design Lightweight mesh upper; Fabric lining; ENERGYRODS to reduce energy loss; Lightstrike Pro cushioning; Continental™ rubber outsole; Upper contains at least 50% recycled material; --