The adidas Adistar is a distance running shoe inspired by the idea of perpetual motion. Tested over 4,500 km, the model combines a soft, lightweight REPETITOR foam platform with REPETITOR +, a Tracksuit foam, to create a dual density midsole. The Tracksuit 15% recycled EVA in the heel protects and helps stabilize any heel strike. Forward propulsion is enhanced by the rocker geometry as well as an overall 6mm drop heel to toe. Strike soft and push forward with a shoe designed to go the distance. As far as the Six goes, details include an engineered mesh Six with internal support cage. The yarn in the Six contains at least 50% Parley Ocean Plastic and 50% recycled polyester.