iPod, iPhone RunLite AirStretch 2 hydration waist belt/pack with bottles for water and fuel by Amphipod Deluxe ultra-comfortable and breathable hip-gripping 360 chafe-free AirStretch belt with perfect capacity storage 21oz of fluid( 2 x 10.5oz. SnapFlask Xtech Modules - also fits 8oz SnapFlask bottles) Two pocket integrated pack (4"x6"x1.5") with secure zipper closure and outer stretch pouch Holds essentials, nutrition, keys, ID, phone and more! Super comfortable AirStretch Belt, with no-profile chafe-free edging