Cute Pig Car/Home/Office Air Freshener Purifier Active Carbon Bamboo Charcoal Bag Size:22*13cmFunction of bamboo charcoal:1，adsorb harmful gas such as methanal， ammonia， benzene2，release far infrared ray3，release anion4，release microelement5，control the reproducing of microorganism6，expelling parasite，sterilization7，antioxidation8，electrostatic shielding，prevent radiation of electromagnetic wavePackage include:1 x Charcoal Package