1. This toothbrush has a 3-sided brush head to cover different sides of your teeth, easily save time cleaning your teeth and keep them in good condition. 2. The bristles will turn soft when using warm water, and hard when using cold water. 3. The toothbrush head is replaceable to keep sanitary when doing a regular replacement. 4. 3 colors are available to distinguish the toothbrush from your family. 5. Ergonomic handle is comfortable to grasp, with a ribbed rubber area for non-slip.