The Women's Adistar from adidas combines a soft, lightweight foam platform with a firmer foam in the heel, to create a dual density midsole. The firmer 15% recycled EVA in the heel protects and helps stabilize the foot during the initial part of each step.
Next up comes the forward propulsion enhanced by the rocker geometry creating a rolling sensation into the next step. Strike soft and push forward with a shoe designed to go the distance.
The goal is to get the foot from 1 step to the other as quick as possible, hereby reducing injuries and increasing speed - even if its just walking.