Designed to fit children ages 2 months to 2 years old Features a SNR noise reduction rating of 26dB and NRR rating of 31dB for protection in a wide range of noise environments Weighs just 140 grams for a comfortable fit over long periods Mean attenuation of 25.7dB at 500Hz and 35.2dB at 1000Hz to drown out harmful loud sounds without blocking ambient sounds Measures 12cm x 10cm when folded and 13cm x 17cm when open for a compact design that's easy to pack up and take with you wherever you go