The outsoles for the adidas performance sneakers are created using a 3D printing process and sealed with the help of UV-sensitive resin. The soles of the adidas 4D models have a grid-like structure, which provides the perfect cushioning and are more tightly woven at specific points to optimally distribute the weight of the runner. The production of the 4D soles takes place in the adidas Speedfactories, where countless 3D printers stand and produce sole after sole. adidas uses the 4D technology but not only for performance sneakers, similar to Boost before, the technology is also used in life style sneakers from adidas. In the Alphaedge Runner, adidas has designed the sole to be slightly thicker, but the most popular is the flatter version used in the adidas Ultra4D or ZX Runner 4D. The 4D sole is also used in the fashion sneakers from adidas Y-3 and fits perfectly with the fordist look of the models.