Approximate volume metric: 8.2 liters Average weight metric: 0.54 kgs Material: Silicone-coated nylon ripstop Liquid cap Approximate volume metric: 8.2 litersAverage weight metric: 0.54 kgsMaterial: Silicone-coated nylon ripstop Liquid capacity: 1 liter Number of pockets: 1 + main compartment Hydration bag