Giovanni Navarre Solid Genuine Leather All-in-One Belt Bag with cell phone holder. It just doesn't get any more useful or functional than this! This belt bag has all the roomy functions of a standard belt bag, but with a twist. It also includes a detachable cell phone holder that measures 4-1/2 x 2-1/2. It's like getting two for the price of one. The waist strap is adjustable. These are great for taking away with on vacations and amusement parks.