Introducing the quad lock sports armband the convenience of the quad lock mounting system to runners joggers and gym goers no longer will you have to struggle trying to fit your smartphone into a neoprene or plastic pouch whether you want to change song or take an incoming call the sports armband gives you quick access to your phones functions the band is made from a comfortable nylon lycra that can be adjust for both small and large arms between a circumference of 17 38cm or 65 15 in