Pack of 10 100% French activated carbon. 100% French coal from the Burgundy forest and managed in a responsible manner. PEFC and FSC certified wood. Details: Weight: approx. 5-15g per stick Filters up to 1.5L of water 6 months of use per stick Manufacture: Origin: France (Burgundy forest managed responsibly) Packaging: France Characteristics: Eliminates chemicals and heavy metals Preserves minerals and trace elements Improves the taste of water 100% recyclable and compostable How do you use activated carbon? At the first use, put the charcoal for 10 minutes in boiling water Let your charcoal dry for a few minutes Let the charcoal work for 2 to 4 hours Your water is purified 1% of our turnover is donated to our partner NGO working for reforestation in the Amazon.