Continental Rubber outsole Imported Lace closure Welcome to the future. Are you ready? The best of adidas running technology is on display in these adidas Ultra4D Shoes. Liquid resin, light and oxygen are combined to create a futuristic lattice midsole. The result is precise tuning and long-lasting comfort. A foot-hugging knit upper is supplemented with a supportive cage and heel counter, and a high-traction outsole keeps you secure on your feet.