GROWN AND CARBONIZED IN FRANCE: Made from agricultural bamboo production in Limousin, combined with carbonization in Burgundy, to offer you a 100% French product. OUR TIPS FOR USE: Use it in a bottle with a thin neck (neck > 2 cm) to purify and mineralize running water naturally. The thin stick has a diameter of 1 to 2 cm and a height of 13.5 cm. It purifies and mineralizes between 500 ml and 1 liter of water. This product is intended for 6 months of use. A NATURAL SOLUTION: Choosing to use bamboo charcoal means fighting against deforestation. Bamboo grows very quickly, between 3 - 5 years compared to 20 - 50 years for wood. Other advantages, it stores 5x more carbon and produces 30% more oxygen for an equivalent volume. KHOOL BAMBOO: We are a brand offering a complete range of natural, economical solutions based on bamboo charcoal to purify the water and air in your home.