Comfortable and colorful, the Adidas Adizero Adios Boost 3.0 enhances your performance on the track while keeping you stylish. The midsole uses thermoplastic polyurethane pellets to form a layer of foam padding that most runners love. When you're coming in for a hard landing, this foam technology is a saving grace. And when you're simply strolling along the sidewalk, it keeps you incredibly comfortable. Memory foam in the collar of the Adizero Adios Boost 3.0 cranks up the comfort level even more.