Add more bounce to your steps with the Adidas Boost running shoe. It features a unique sole material that not only gives you excellent cushioning but also a bounce to boost your running. We've seen a few people improve their running times already. Adidas claims that it can help break the world record in marathon running. The top part of the shoe (the upper) flexes to provide comfort and support to your feet. Many running shoes are either designed for speed or comfort. Energy Boosts are designed for both. And we think it looks great too.