NWT Reebok Nano X3 Sneakers / Training Shoes Grey, sleek. Size 11. NANO X3 TRAINING SHOES VERSATILE FITNESS SHOES WITH A SUPPORTIVE BUILD 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. SPECIFICATIONS Regular fit Flexweave® woven textile upper [REE]CYCLED: Made with at least 30% recycled or repurposed materials Designed for: Training Lace closure Lift and Run chassis system Textile lining Floatride Energy Foam All-surface rubber outsole Product color : Cold Grey 2 / Cold Grey 2 / White