Usage Tips:BRING BAMBOO'S PURIFYING AIR HOME FROM 28°N LATITUDE - Activated charcoal odor absorber sourced from bamboo groves basking in 8 hours of daily sunlight, fertile soil and abundant water sources, forms the foundation of a richer porous structure and organic composition than others. ODOR CONTROL POWER FROM 25,000,000/G ADSORPTION PORES - Activated bamboo charcoal engineered through precise 1500℉ carbonization, boasts 2-50nmm Micrometres and nano-sized pores, providing a specific surface area of 1000 square meters per gram THREE-LAYER DESIGN MEETS SUPERIOR ODOR ELIMINATION - Bamboo charcoal bags odor eliminator for home with breathable fabric prevents charcoal dispersion and accelerates air contact, filtering odors without compromising airflow, ensuring continuous and potent odor elimination for cigarette smoke odor absorber. 2 YEARS CONTINUOUS FRESH AIR - Revel in 17,520 hours of natural deodorizer odor eliminator! A simple monthly sunbath recharges the bags, making them a cost-effective choice for your pocket and a compelling one for the planet. Colour:Gray Material:activated carbon Package Contents: 4 * Activated Charcoal 4 * hook Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.