Made in France - 100% natural Charbon Actif Français invites you to discover Europe's first bamboo pyrolysis! Thanks to this Takesumi vegetal charcoal stick, you can purify running water in carafes and wide-necked containers. Three times more absorbent than conventional charcoal, it also contains numerous minerals, including potassium, calcium and silicic acid. Charcoal life: up to 6 months. Dimensions: 2 cm X 13 cm (approx.).