[U Shape and 4 Brush Heads] : Our kids electric toothbrush is made of food grade soft silicone material,specially designed for kids gums and sensitive teeth.Includes 4 brush heads: 2 food grade silicone U-shaped brush heads and 2 soft brush heads. The soft toothbrush head that surrounds the teeth 360 degrees provides a comfortable brushing feeling, more efficient and deep cleaning of teeth, and can also help children develop healthy brushing habits.