The Summit Reusable Dehumidifier Bag bsorbs excess moisture from the air and prevents condensation, This powerful and cost-effective solution absorbs excess moisture from the air, preventing condensation, mould, musty smells, and mildew. Keep your windscreens crystal clear and fog-free, thanks to its 350g of activated silica gel which can absorb up to 40% of its weight in moisture. When the blue indicator on the bag turns pink, simply recharge it indoors on a raiotor or in a microwave. Eco friendly this dehumidifier is suitable for Cars ,Caravans, Motorhomes and Campervans