Every kilometre you clock builds resilience and fitness for race day. The adidas Adizero Boston 12 are super-lightweight with a propulsive underfoot sensation to help you push your pace. Dual-density Lightstrike cushioning and ENERGYRODS 2.0 are tuned for snappy energy-efficient transitions from heel to toe. Continental rubber for the outsole fills out the package, making them ideal for your tempo-training days when you're chasing down that next PB.