Moso Natural 2 Pack Air Purifying Bag, (1) 200 gram, (1) 500 gram Value Pack of 2 1-200 gram and 1-500 gram Bags, Natural Covers Naturally helps remove odors, bacteria, harmful pollutants and allergens Dehumidifies to prevent mold, mildew and excess moisture Fragrance free, non-toxic, eco and pet friendly 100% Bamboo Charcoal will last up to two years