Waterpik Sensonic Toothbrush Standard Brush Heads feature a high-low bristle configuration with extra soft end-rounded bristles for gently targeting hard-to-reach places.

Soft end-rounded bristles gently target hard-to-reach areas
Advanced brush head design with high-low bristle configuration
3 replacement sonic toothbrush heads per package
Replace every 3 months
Recommended for use with: Sensonic Professional Plus Toothbrush Complete Care