Key Features and UseDesign: The U-shaped head is typically made of food-grade silicone or soft nylon, intended to wrap around both the upper and lower teeth simultaneously.Age Range: While the box indicates 2–12 years, they are most commonly used by children aged 2–6 who are still developing the manual dexterity needed for traditional brushing.Operation: To use, apply foam toothpaste to both sides of the brush, place it in the mouth, and sway it from side to side or in circular motions for about 30–60 second