Upgrade your everyday runners with the Men\\\'s Structure 23 Running Shoes from Nike. These shoes are great for casual wear or raking up the miles with plenty of ventilated support throughout the upper, a Zoom Air unit in the forefoot and a foam midsole for responsive cushioning to ensure you received energy return with each step. The crash pad in the heel is inspired by data from hundreds on runners for extra cushioning on the heel-to-toe transitions. > Upper: Synthetic/Textile/Leather > Sole: Synthetic