Every good design starts with a question. For the adidas 4DFWD, we asked: Can you code a pair of running shoes for an easier run? We studied the gait cycle of thousands of runners, then tuned the lattice midsole with precisely positioned zones of support and absorption. The shoes expand on the innovation of adidas 4D by adding angle into the equation. They also have a heel cradle that glides the foot forward for a more effortless stride. This product is made with Primegreen, a series of high-performance recycled materials. 50% of the upper is recycled content.