Set of 1KG of Japanese bamboo activated carbon (flat). Details: - Weight: Approx 20g per stick - Filters between 0.5 and 1.5L of water - 6 months of use per stick Manufacture: - Origin: Japan (Kochi prefecture) Takesumi features: - Eliminates chemicals and heavy metals - Larger filtration than oak (larger filtering surface) - Preserves minerals and trace elements - Improves the taste of water - 100% recyclable and compostable How do I use Takesumi? - 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 between 2 to 4 hours - Your water is purified! 1% of charcoal sales are donated to our partner NGO working for reforestation in the Amazon.