This tiny bag is great if you want to carry small items like compass whistle knife energy bar or camera films. It'll take a compact camera too. When travelling it's useful for money tickets passport and other documents. It's light enough and low enough in bulk to be carried in the pack when not needed. So useful we even supply it to the Australian Air Force! Weighs 140g holds 3 litres in volume and measures 34 x 12 x 9cm.