The bristles are a clever blend of nylon and charcoal. Nylon #6 offers tough, elastic and soft bristles for gentle brushing, made from castor oil (not petroleum), which reduces ecological impact. Charcoal, on the other hand, improves moisture resistance and contributes to healthy, white teeth. The hair is 100% vegan. Body: 19 cm long. Base diameter: 1.5 cm. Head: width 1 cm, length 2.7 cm. Bristles: 1.2 cm high, 40 soft spots. Can be used like a conventional toothbrush, with a lifespan of 2-3 months depending on use. Rinse well after each use (hot water helps remove toothpaste residue) and allow to air dry. For monthly disinfection, dip your head into a glass of water with a few drops of EPP. Responsible manufacturing. Made in China, this brush is a sustainable choice. Weight with packaging: 14g Dimensions with packaging: Length 23 cm, Width 5 cm.