The Ultraboost shoe has been at the forefront of running technology since its launch in 2015. This Ultra 4D version features a lightweight and breathable adidas Primeknit upper that wraps the foot and provides a comfortable fit. The midsole created using 3D digital printing offers a lattice structure with denser parts that provide added support and open parts that provide added cushioning. This shoe doesn't just look like the future. It is.