Experience a gentle yet effective clean with the Oral-B Io Series Gentle Care Toothbrush Refills. Designed specifically for sensitive teeth and gums, these replacement heads provide specialized care. Enjoy a superior cleaning experience that removes more plaque than a manual toothbrush, while being extra gentle on your oral hygiene routine. The pack includes 4 replacement heads, ensuring you have a supply for several months. Perfect for daily use, these brush heads are compatible with the Oral-B Io Series electric toothbrushes.