Nathan sonic mount this nathan sonic mount is ideal for when youre out walking or running the none slip side grips lock your phone tightly into place so that it wont shake loose it fits all phones with cases that are between 2 316 and 3 wide and 932 and 12 deep thanks to the rear panel that stretches to fit most smart phones and cases the mount comes with a chafe free comfortable and adjustable arm band but can be removed so that it clips to belts packs and more phone mount