The Walkers Infant Passive Muff Electronic Ear Muffs is specifically designed to provide comfortable and effective hearing protection for children’s sensitive hearing. The smaller muff size is ideal youth protection to suppress harmful loud noises without shutting out other ambient sound, such as a parent’s voice. Engineered for infant to toddler Comfort headband Growband included to help with fit as young heads grow Noise reduction rating 20 dB Sturdy construction