Adidas Adizero Boston 13 is Created for Runners who want speed, Stability, and Comfort for both pace and Volume Training. The shoe Combines Advanced Technology from Adidas’ race Models with a more Robust Platform, Making it ideal for daily Training and Longer Distances. The stack Height is 36mm in the heel and 30mm in the Forefoot, thus a 6mm heel drop. Boston 13 is Equipped with a Midsole in two Layers: the Energy-filled Lightstrike Pro foam on top and the more Stable Lightstrike 2.0 below. This Combination Provides both a Dynamic feel and good Support on long runs. In the Midsole, you will also find Energyrods 2.0 – stiff Fiberglass rods that Provide Propulsion and Reduce Energy loss at Take-off. The upper is made in a Breathable, Partially Recycled mesh Material, Ensuring a snug and Locked fit Without Compromising on Ventilation.