General description 100% Natural, Green & Chemical Free: Uses naturally sourced activated bamboo charcoal. This product is fragrance-free, chemical-free, and non-toxic. With specially formulated activated bamboo charcoal, the purifier bag works naturally as a deodorizer and air purifier to maintain a fresh and breathable environment. Technical specifications Material: Bamboo Charcoal Color: Orange, Green, Blue, Purple Package Contents: 4 x Bamboo Charcoal bags Measurement allowed error: +/- 1-3 cm Usage Simply place the bamboo charcoal bag in or near the environment. Suitable for kitchen, pet areas, painted walls, car, shoes, shoe deodorizer, and gym. Long-lasting: Deodorizers last for more than 2 years. To refresh, leave activated charcoal in the sun for an hour or two once a month.