The Nano X3 is Reebok's flagship cross-training shoe, built for gym work, weightlifting and HIIT. A Floatride Energy Foam midsole balances cushioning with a firm, stable platform for lifting, while a flexible forefoot and solid heel clip support dynamic, multidirectional movement. A breathable mesh upper and durable rubber outsole round out a shoe built to handle everything a CrossFit-style session throws at it. Best for gym-goers who want one shoe for lifting, HIIT, and short training runs.