Features Back pack capacity: 14.5 liters Hydro bag capacity: 2.5 liters Easy to clean thanks to the large cap Drinking straw with adjustable opening & closing valve Ideal for those who need a supply of water & want to replace the carrier with a back pack Removable pocket & trousse for tools bag Braces at X with quick release center & adjustments with 4 Velcro straps Breathable fabric in the area in contact with the back