Oral-B Ultrathin Gentle Gum Care is a revolutionary toothbrush designed for a superior cleaning experience. With bristle tips that are 20X thinner at 0.01mm, it provides a deep clean along and between teeth while being gentle on gums. The ultra-slim tip offers 2X more flexibility in bristle tips compared to regular brushes, ensuring a thorough cleaning process. The ultrathin bristles reach up to 2X deeper between teeth than regular flat trim brushes, ensuring a comprehensive clean. With a 25mm small head, it effectively cleans the molar area, and the 20X thinner bristle tips contribute to its exceptional cleaning performance. Oral-B, the #1 toothbrush brand used by dentists worldwide, brings you a toothbrush that delivers both precision and gentleness for optimal oral care. Note that this toothbrush is not intended for children 3 years and under, and it is recommended to replace the brush every 3 months for continued effectiveness.