ra kuras Pediatrician Recommended Model Earmuffs Soundproof Children Hearing Sensitivity NRR26db Slide-type Headband With an NRR value of 26db, it has moderate sound insulation performance that allows you to hear the necessary sounds. These earmuffs are for "children with autism who have hearing sensitivity," "children who panic at loud noises or specific sounds when going out," and "children who are bothered by noise at school and cannot concentrate." Suitable for children aged 3 and older. Although these earmuffs are made for children, the length of the headband is adjustable, so adults can also use them. Thank you for viewing.