A recrafted version of the 2001 icon, the Shox R4 replicates the original with its synthetic leather upper, design lines and laser perforations. Nike Shox cushioning in the heel distributes weight to maximize comfort, plus a performance-inspired look. Benefits - Synthetic leather upper with laser perforations is breathable and durable. Perforations on the sides add breathability. Nike Shox columns provide resilient cushioning. Modified, circular Waffle outsole gives you durable traction. Product Details - Reflective details. Foam midsole. Rubber outsole. Not intended for use as Personal Protective Equipment (PPE).