Oral-B iO Series Gentle Care Black Replacement Heads, Genuine Round Heads for Sensitive Gums, 3

HIGH SETTLE DENSITY: Oral-B Gentle Care replacement heads feature up to 4000 soft bristles for gentle and proper cleaning COLOR-CHANGING BRISTLES: Oral-B replacement brush heads feature color-changing bristles to signal when to replace the brush head to optimize your brushing REPLACE EVERY 3 MONTHS: A worn out toothbrush head hinders cleaning, leaving bacterial plaque unaffected. For superior cleaning, replace brush head when bristles fade EXCLUSIVE FOR IOS ORAL-B HANDLES: Get superior cleaning power with the only brush head designed exclusively and definitely compatible with your Oral-B iO electric toothbrush TEENTIST CHOICE: Oral-B, the most widely used toothbrush brand by dentists in the world