Men's Reebok Nano X3 Cross Training Shoes 54871-HP6041 Believe it or not, there's a training shoe you can actually run in. Meet the Nano X3 training shoes with the all new Lift and Run Chassis system. A dome-shaped heel piece compresses under load when lifting to create a stable platform, then softens when you push off to run. It all rides on award-winning Floatride Energy Foam that gives you lightweight cushioning to make that run the easiest part of the workout. Features A training shoe you can run in with the all new Lift and Run Chassis system. A dome-shaped heel piece compresses under load when lifting to create a stable platform then softens when you push off to run. It all rides on award-winning Floatride Energy Foam that gives you lightweight cushioning to make that run the easiest part of the workout. A training shoe you can run in with the all new Lift and Run Chassis system. A dome-shaped heel piece compresses under load when lifting to create a stable platform, then softens when you push off to run. It all rides on award-winning Floatride Energy Foam that gives you lightweight cushioning to make that run the easiest part of the workout. Men's Reebok Nano X3 Cross Training Shoes