The FitZip waist pack is so stretchable you will not believe how much you can carry! This handy pack can fit a water bottle or large mobile phone (phablet). The interior has a water-resistant lining to protect your valuables from sweat. And the flush-shut zipper feels smooth, stays shut tight, and provides a reflective surface to on-coming lights. The elastic belt has a sturdy snap closure; the FitZip adjusts from about 68 to 100 cm. Pouch is approximately 30 x 4 cm when empty.