Men's Nike Shox R4 has a good grip. With a well-designed outsole pattern, the shoe provides good traction on all terrains to keep it in good shape while running / walking. The inside of the shoe feels very smooth and seamless. At the time, Shox Gravity was one of Nike's fastest deliverables ever, demonstrating the speed at which Nike can bring products to market from a concept sketch. Like the original model, the new Shox uses dual panels with elastic foam cushioning under the heel.