Toothbrush - Comfort Clean, Soft – 3-zone technology: Consisting of silky-soft special bristles, bristles with an angled profile and flat cut, for superior cleaning*. The Comfort Clean toothbrush offers superior cleaning performance* thanks to its 3-zone technology, while remaining gentle on teeth and gums. This 3-zone technology combines silky-soft bristles on the outer edges, an angled profile, and a flat cut in the center of the brush head. Additionally, the ball joint allows for a flexible brush head to adapt perfectly to your teeth, and the flex zone gives way under excessive pressure, helping to protect your gums from injury. *Up to 93% better cleaning of interdental spaces in laboratory tests, compared to a non-flexible flat-cut toothbrush. Application Brushing your teeth 2 to 3 times a day is recommended. mandatory text The brush head can break if stretched too much. Children under 6 years old should be supervised while brushing their teeth. Do not chew on the bristles or toothbrush. Dentists recommend changing your toothbrush at least every 3 months.