Bolayu Armband Gym Running Sport Arm Band Cover Case For iphone 6/6S 4.7 Inch (Purple) Material: Neoprene,reflective materials. Dimensions: 45cmX15cm. Extremely light and durable for on the go use. See-through clear protective face allowing you to view screen Take exercise and enjoy music conveniently with the ultimate workout companion. Adjustable armband, fits the arm circumference: 11.02 - 13.78 inches, lets you adjust your arm band for maximum comfort.