Bamboo charcoal is an all natural air purifier that removes pollutants, allergens, moisture and toxins from the air. The porous grey linen bag can either be hung by the metal grommet or with the included cotton cord. The larger size is great for a bedroom, bathroom or near a pet bed or litter box. Don’t forget one in your vehicle and a few in your camper to keep the air fresh without adding fragrance. The smaller size is perfect for your gym or hockey bag, golf shoes, closet or under the sink. 50 gram bag.