Antibacterial bristles (Bristles incorporate an antibacterial agent for continuous bristle protection. Bacterial growth that may affect the bristles is inhibited. The agent in the bristles does not protect against disease). Remove up to 25% more plaque (Compared to conventional nylon filament. Data on file (DOF-0001). Flexible grip. Recommended by dental professionals. Flexible handle for better comfort and control when cleaning hard-to-reach places. Triangular shaped bristles remove up to 25% more plaque. Bendable neck makes cleaning back teeth easy. Antibacterial bristles keep brush clean between uses (Bristles incorporate an antibacterial agent for continuous bristle protection. Bacterial growth that may affect the bristles is inhibited. The agent in the bristles does not protect against disease). Micro tight. Ultra tight. Tight. Moderate. Wide. gumbrand.com. GUMbrand.com or call us at: 1-888-777-3101. Made in USA.