Nike's ACG line is back with the Mountain Fly Low QS. Up top, the pair opts for a lightweight, ripstop construction. Below, it draws inspiration from the Vaporfly 4%, boasting a carbon fibre plate within the React midsole to protect you from hard, uneven surfaces. There's also a heavy-lugged outsole to stop you from slipping on challenging terrain. DA5424-200, Textile & Synthetic Upper/Synthetic Sole.