From burpees and squats to short runs, the Reebok Nano X1 is a powerful cross-training shoe to help you perform your best. The Nano X1 has Floatride Energy Foam that provides lightweight, responsive cushioning that is perfect for CrossFit and HIIT classes. The flexible forefoot and refined toe shape make it so you can move and push off with ease. The Speed Chassis is a lightweight heel clip that provides stability for quick movements in all directions. Breathable and durable, the Nano X1 sports a Flexweave® knit upper that is soft and comfortable, but has the toughness your training requires. The shoe has an improved comfort collar for a locked-in feel and additional comfort.