Dual-density REPETITOR and REPETITOR+ midsole Internal support cage Synthetic & Rubber Running Shoes If racking up miles is the goal, the adidas Adistar is the shoe to take you there. Part of our partnership with Atlanta Track Club, these running shoes handle anything from 5K training to 100K races. Born from the idea of perpetual motion, they offer a mix of cushioning, support and propulsion. The dual-density midsole mixes lightweight REPETITOR with firmer REPETITOR+ under the heel. An internal cage provides lockdown, and the forefoot rocker gives you the feeling of forward propulsion. The end result? A ride so smooth you feel like you can run endlessly. This shoe's upper is made with a high-performance yarn which contains at least 50% Parley Ocean Plastic - reimagined plastic waste, intercepted on remote islands, beaches, coastal communities and shorelines, preventing it from polluting our ocean. The other 50% of the yarn is recycled polyester.