Introducing Boost HD: a new innovation in Boost technology. adidas has engineered Boost HD for more stability with the same unrivalled energy return and comfort. It’s a new expression of the best. Sitting lower to the ground, Pulseboost HD is ready for the unexpected. A sudden stop, juke or quick change in direction on a busy city street is not a problem with a completely new package of performance benefits for runners. – Boost HD is engineered for more stability with the same best-in-class…