adidas 4DFWD 2 redefines propulsion by combining a unique and innovative 3D printed midsole, a new upper construction and a Continental outsole for superior traction. With each stride, the 4DFWD 2 midsole flexes forward, reducing braking forces and turning the energy generated into propulsion. As a result, it provides a smooth stride with less impact on the asphalt. The grippy Continental rubber outsole provides perfect grip on wet and dry surfaces. The adidas PRIMEKNIT+ upper conforms to the shape of the foot with a new design that promotes movement and is made from a minimum of 50% recycled materials. This product is just one of our solutions to combat plastic waste.