adidas Every day is an opportunity to improve: your expectations, your outlook, your run. The Ultra 4D is coded to help you get there, starting with a 3D-printed 4D midsole designed to stabilize your ride. Long-lasting cushioning helps you go the distance, and adidas PRIMEKNIT wraps your foot for support through every stride.Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste.