Natural Bamboo Charcoal Shoe Deodorizer Bags (Set of 4), Absorb Moisture and Odor Naturally in Shoes and Small Spaces SET OF 4 Moso bamboo charcoal bags (75 grams each); Outer material is a natural green linen fabric. KEEPS SHOES FRESH AND DRY. Place inside adult shoes, boots and sneakers to prevent moisture and summer sweat from creating unpleasant smells in your favorite footwear. NATURAL ODOR ABSORBER: the porous bamboo charcoal inserts absorb moisture and odor naturally; No chemicals or perfumes to cover up odors. MULTIPLE USES: Our charcoal deodorizers work well in smaller enclosed spaces such as pet areas, gym bags or trash bins; Use the O-ring to place over a hanger and freshen lockers and closets. ECO FRIENDLY MATERIALS are kind to the environment. Recharge in direct sunlight every 30-60 days and reuse the bamboo charcoal bags for a year or more; Recycle used charcoal in the garden.