Feature: Made from high quality ABS and sponge which is comfortable to wear. There are four colors of cup for these earmuffs and you can choose the color you like more. The material and design of the earmuff allows for a reasonable attenuation of roughly 25dB NRR. High seal solid cup and unique shell design. It can provide SNR 27 dB (noise reduction rating) for the ear. It can protect babies from loud, harmful sounds. So they get a good night's sleep, protecting their hearing. Specification: Material: ABS & Sponge Weight: 150g/5.3oz Color: Blue, Yellow, Pink, Green (Optional) Suitable Age: Under 3 years old Wearing mode: head-mounted SNR: 27dB NRR: 25dB Package Size: 17168cm/6.76.33.1inch Package List: 1 x Noise Reduction Earmuffs