The Best Ninja Armband for Runners Korton - iPhone 6 Holder [4.7 inch] [Full touch screen control] for sports - running jogging cycling, key holder waterproof (protection from rain) stretchable fabric clear cover sweat-proof key-holder slot flexible anti-slip protection All in one - Features : holder for you iPhone 6, key holder (only rounded, width up to 25mm/1 inch) , earphone port, drivers license holder The best for jogging, cycling, hiking and waterproof (for both small and large arms; circumference : 17 - 38cm/6.5 - 15 inches) Listen to your music while you exercise, earphone port is included Keep with you your drivers license, credit card and of course your key Made of top quality Lycra which is durable and resistant to detergents, lotions and sweat.Unique design allows easy access to all buttons and controls through the clear cover