Air Purifying Bag' is the coolest and the simplest way to maintain a dry, fresh and odor free environment. The Vayu Bag naturally helps to remove airborne chemicals, harmful pollutants, bacteria, allergens and odors of cigarette smoke, paints, pet dander and cleaning chemicals floating in your air. 'Air Fresheners' which usually fool your nose thinking the air is clean are often filled with formaldehyde, petroleum and fragrance, which can be carcinogenic and lead to numerous health problems. Whereas, each Vayu Bag is filled with 100% activated charcoal. Charcoal has long been used in our filters to purify water, and it's also popping up in beauty products. It has the SAME TOXIN-REMOVING EFFECTS ON AIR TOO. Vayu Bag works by adsorbing pollutants esp. Volatile Organic Compounds (VOCs) like formaldehyde which is one such VOC that alone is responsible for dizziness, fatigue, headaches, nausea and rashes, from the air and temporarily storing them in its' millions of tiny pores, until rejuvenation. As air passes through the pores, pollutants are trapped on the surfaces of these pores inside, which ultimately purifies your air. Just place the Vayu Bag in the desired area and the results would be visible in a short span of time (usually in 24 - 48) hours. We have a Vayu Bag for all your needs - Vayu Bag (L) - 500g Covers area up to 200sqft and is suitable for bedrooms, kitchens, basements, offices etc. Vayu Bag (S) - 200g Covers area up to 80sqft and is perfect to purify and remove odors from small spaces like cars, bathrooms, closets, pet areas etc. Vayu Bag (Mini) - 75g It is the smallest sized Vayu Bag which is best used for travelling bags, sport equipment, shoes, boots and drawers, removes odors from refrigerators, freezers etc. Just place the bag in direct sunlight once a month to recharge. Each Vayu Bag can last up to a period of 3 years and after that, this charcoal air purifier makes a perfect natural fertilizer to the plants.