Ship from Hongkong. Size: 19*19cm/7.5*7.5inch. Net weight: 500g. Material: High Quality activated carbon and non-woven fabrics. Natural auto air purifying bamboo charcoal bags prevents mold, mildew and bacteria from forming by absorbing excess moisture. 100% natural bamboo charcoal, bamboo charcoal can increase the amount of negative ions in the air, create a good physical and mental health work, living environment. Innovative designs, that decorate your car perfectly. Small size, big effect!