Carrying two water bottles, the Orange Mud Vest Pack 2 is designed for long hard days that take a lot of water and nutrition.Hydration Packs details:Food/accessory pockets on the shoulders for quick accessFront chest pockets for access to nutrition on the fly25oz BPA Free, bottle based hydration for easy fill, easy clean-upMedical grade mesh for maximum breathabilityGreat for running or hikingiPhone 6/7 in a case will fit into the shoulder pockets, iPhone 6+/7+ will fit in the optional modular bag or in the front chest pockets