Rubber sole 3D-printed 4DFWD midsole Combination of adidas PRIMEKNIT+ and engineered mesh adidas 4DFWD 2 redefines forward motion combining the unique, groundbreaking innovation of a 3D printed midsole with a new upper construction and a Continental outsole for extra grip. With every stride, the adidas 4DFWD 2 midsole compresses forward, reducing braking forces and transforming the impact energy into forward motion. The result is a smooth ride with less stop-and-go pounding on pavement. The Continental outsole grippy rubber outsole provides traction on wet and dry surfaces to keep you going in all conditions, and the adidas PRIMEKNIT+ upper wraps the foot with a new fit that enhances movement. The PRIMEKNT and the stripes are reflective while the midsole offers innerglow light reflection. 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.