CaaZ Running Hydration Pack with 17 Oz. Bottle and Interchangeable Waist Belts 1 Pocket/pouch with 2 belts, belt one carries the bottle and belt 2 is ideal for transforming the hydration belt into a fanny pack/travel belt/running belt/waist pack (see images). Both belts have adjustable Velcro waist, fits up to 47" reflective strips & anti-bounce grippers for optimal safety & comfort Features 7.5" pocket - Large enough to store an iPhone 6 or other smartphones with OtterBox case Comes with 500 ml, leak-proof, BPA-free water bottle & 2 removable race bib holders for marathons! Ultra-lightweight, water-resistant belt is ideal for men & women while walking, hiking or jogging Bag features special earbud outlet at the back of the pouch for easy access when you hit the trails - comes with "Free Runner's Guide Ebook"