Hearing is not yet fully developed in babies and toddlers, and they are particularly sensitive to noise. Noises louder than 85 decibels (e.g. airport noises, or fireworks) are harmful to sensitive baby ears, and can cause permanent hearing damage. Because of this, you should protect the hearing of your little one(s) as well as possible. The SilentGuard Baby capsule ear protector provides reliable protection against harmful noises, preventing possible hearing damage. Prolonged exposure to any noises louder than 80 decibels (e.g. lawn mowers, large groups of people) can cause damage to hearing. The louder the noise, the quicker it results in hearing damage. A sound that is as loud as 110 decibels (e.g. firework, a car horn honking nearby) can lead to immediate damage to hearing. Because of their insulation, these capsule ear protectors have a single number rating (SNR) of 27, providing reliable protection to sensitive baby ears. A sound insulation level of 27 SNR means that, on average, the protector reduces the sound intensity by 27 decibels before the sound reaches the eardrums. As a result, most loud noises can be reduced to a harmless level (under 80 decibels).This robust ear protector includes an adjustable headband coated with a soft surface material. The headband can be continuously adjusted to your child’s head, making it possible for the hearing protector to grow with your child. The inner surface of the headband is padded for very high wearing comfort.