You can use it as a waterproof phone case! A runner's delight, our running belt features a convenient pocket for your keys and a second for your mobile device. It features a large front zippered pocket, 2 small side pockets, and an ear pocket. You can keep your phone, keys, cards, and money in this fanny pack. The adjustable elastic waist strap makes it comfortable to wear all day long if needed. 3 5/6" W x 8 4/5" L