Dentist recommended: The two-minute brushing timer is designed based on scientific guidelines to help children brush for the recommended duration without feeling it's too long, keeping them engaged and interested in oral hygiene. Brushing made fun: Features vibrant color themes, cute tooth shapes, and cheerful cartoon faces that encourage kids to enjoy their brushing routine. Safe and durable: Made from high-quality PVC, borosilicate glass, and non-toxic sand. Tested to ensure the sealed ends are secure and resistant to breaking, making it a safe and reliable brushing timer for children. Versatile use: Ideal for establishing healthy brushing habits, and also useful during study or playtime to help children manage time effectively. A thoughtful gift for kids and families. Hourglass instructions: Includes 2 pieces of 3-minute hourglasses. Shake gently to loosen the sand, then flip over on a flat surface to start timing. Note: This is not a precision instrument; allow for a 10% variance in timing accuracy.