The Nike ISPA OverReact brings you comfort via an ultra-cushioned midsole with a lightweight upper ideal for warm-weather conditions. Nike React technology offers a lightweight, durable foam that delivers a smooth, responsive ride. Our designers doubled down on the foam, using data to place even more cushioning where you need it most. Fabric between the foot and the midsole has been removed, so you step directly on the React foam, giving you plush cushioning as you walk. The tread pattern throughout the outsole and midsole nods to improvised traction systems. It delivers a tough grip for your outdoor adventure. A stripped-down upper reveals intertwined layers that help keep your foot secure when on the move. Use the heel loop for easy on and off.