The FlashFlo is a popular system that speaks to those who run, walk, bike, or just kick around town. Offers enough water for 1 to 2 hours out, plus cargo space for a snack or CD/MP3.FEATURESSide-cinch compression keeps load stable and secure.External zip pocket for keys and essentials.Reflectivity for increased low-light visibility.Secure outer pocket fits CD or MP3 players.Breathable mesh waistbelt keeps you cool.SPECIFICATIONSCapacity:45oz (1.4 Liters)Cargo:98 cu inDimensions:8.25in x 8in x 3.5inWeight:Filled 3.93lbs - Empty 1.00 lbs