The Strong Sports Armband for iPhone 5S/5 allows you to exercise with your music by keeping your iPhone 4S secure and protected in the lightweight and durable material. Its unique design allows access to all buttons, ports and functions without having to remove the skin. The air ventilators works as heat transfer grids thus allowing sweat to escape rather than creating irritation and increase comfort to maximum adjustable strap gives you the versatility to carry your iPhone 5S in a variety of ways whilst walking, running, riding or lifting weights.