Air Dry absorbs moisture from the air like a magnet. Prevents rust, mildew and fungus stains. Also prevents damage to electronic systems. In addition Air Dry keeps away unwanted odors and this way creates a pleasant indoor climate. Air Dry constantly reacts by absorbing excess water from the air. The windows will be clear after a while or fog from windows will disapear. Dry air is capable of absorbing up to 400 g of water. The bag can be dried in the sun or on radiator.