ACI Colgate Sensitive Toothbrush - 1 Piece has densely tufted ultra-soft bristles that are gentle on your teeth and gums thereby providing Superior Gentle Cleaning to your teeth. Its flexible neck joint helps reduce pressure on gums, and the enhanced rubber thumb grip handle gives a better grip for improved brushing control. The ultra - soft bristles take care of sensitive teeth and gums, specially designed for a thorough gentle cleaning. Colgate is the No. 1 toothbrush brand recommended by dentists.