The Nike Free Run+ 'Cool Grey' sneaker is specifically designed to provide a barefoot-like experience while running. Its ultra-light upper and flexible outsole offer maximum freedom of movement. The shoe is constructed with airy mesh and supported by durable, laser-cut overlays for added durability. It features bold branding on the lateral side and a minimal heel for natural mobility. The plush cushioning and Nike Free outsole work together to provide flexible shock absorption. Additionally, the shoe is compatible with Nike+, a separate sensor that can be purchased separately to track running performance.