selection of materials: Our bamboo charcoal air purifying bag is made from bamboo grown in the deep mountains for more than 5 years, ecological, sparsely populated, non-polluting, clean water. 100% natural organic activated carbon, without adding any chemical , better air purification. First-class quality: super adsorption capacity of bamboo charcoal bags, after a thousand degrees of high temperature anaerobic carbonization over a period of 60 days burned . The particles are large, fine and porous, and the contact area with space is larger, and there are more pores on the of air purifying bags Application scenario: multi-size bamboo charcoal air purifying bag (6 colored odor absorbers for home 4 shoe deodorizers 2 large pack pet odor eliminator for home, 2 exquisite car air fresheners-You receive up to 4 pounds of odor absorber) Reusable: charcoal bags odor absorber has an anionic charge and a porous structure. Use odor eliminator to odors instead of covering them. To maintain good adsorption capacity, it is recommended to expose charcoal air purifying bag to sunlight for 1-2 hours every month to remove the odor and moisture absorbed in charcoal odor absorber , 100% AFTER-SALES SERVICE: We are very confident in our bamboo charcoal air purifying bag. and we get up to 4 pounds of bamboo charcoal air purifying bag.