As one of Oral-B’s premium replacement toothbrush heads, the Sensitive Clean features ultrathin bristles that are gentle on gums, combined with regular bristles that are tough on plaque. Sensitive Clean removes up to 100% more plaque and reduces gum inflammation by 100% compared to a manual toothbrush. The unique combination of end rounded and ultrathin bristles make Sensitive Clean ideal for everyone with a sensitive mouth and everyone who is looking for just a great gentle clean. Compatible with all Oral-B handles except Pulsonic & iO. Packaging may vary.Combination of regular bristles for cleaner teeth & ultrathin bristles for healthier gums, Up to 100% more plaque removal and healthier gums vs. a regular manual toothbrush, Oral-B’s best for gentle cleaning and healthier gums (excluding Oral-B iO), Compatible with all Oral-B handles except Pulsonic & iO, From the #1 brand recommended by dentists worldwide, Number of toothbrush heads included in this pack: 4