In a class of its own: with its small brush head, the CS smart is actually a children's toothbrush. Nevertheless, our adult testers were equally enthusiastic: they said it is exceptionally accurate when brushing and wonderfully fine. We should have realised this when we gave it so many fine CUREN® filaments. For children over the age of 5 and for adults. 7'600 CUREN® filaments, 0.08 mm. Incredibly soft, gentle and effective. Important: Colours may vary.