Description: 100% Band new and high quality Outside: 600D Oxford waterproof fabric Inside: 420D nylon waterproof fabric Size: 43*18cm/16.29*7.09inches Color:As picture show Capacity: Liner 3L Two layers cargo design, one for hydration bladder, and the other for extra carrying purpose,can hold digital products and other stuff.. Adjustable shoulder strap and chest belt, suitable for heavy carrying Equipped with a tube with a bite valve to drink, so you don't need to hold it to drink A switch on/off bite valve, convenient for control the flow of water No Taste, No Virulent Perfect to use when hiking, rock-climbing , riding and other outdoor actives Package include: 1 X 3L Cycling Backpack with Water Bag.