Walker's Youth Folding Passive Earmuffs - 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. Suitable from ages 6 months to 8 years old. Designed to protect children's sensitive hearing needs Soft Foam Ear Pads Ultra lightweight, compact folding design Low profile contoured cup Padded and adjustable headband NRR 23dB