Birth and up. Keep babies calm with these Baby Protective Earmuffs. Loud noises can be distressing for babies, and consistent exposure to sounds above 70 decibels can damage their hearing over time. These earmuffs reduce noise by 25 decibels and thereby decrease the potentially harmful effects of fireworks, concerts, and other loud events and atmospheres. Their soft-foam ear cushions also make them comfortable for babies to wear.