Bamboo handle in red colour for toothbrush head. These toothbrushes are made of biodegradable ecological bamboo from the forests of Ningbo. The red enameled handle is biodegradable, and it decomposes easily and serves as a fertilizer for the soil. The bamboo gives it bactericidal and antifungal properties. The filaments come mostly from raw materials of renewable origin, mainly from castor oil (more than 70%). Nowadays they are the most sustainable and recyclable filaments. Bamboo is antibacterial and antifungal due to a substance called "bamboo kun", an antimicrobial agent that helps the plant to resist the attacks of pests and fungi.