BOOST midsole Imported Lace closure Make every run your best one yet. These running shoes are loaded with tech to help you get the most out of every mile. Responsive BOOST cushioning delivers ultimate comfort and energy return. Foot-hugging adidas PRIMEKNIT supports every step, and a Linear Energy Push system keeps you going longer. The grippy rubber outsole gives you traction on wet and dry surfaces so you can go the distance in all conditions. 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.