Etymotic Research ER20 ETY-Plugs Hearing Protection Earplugs
We use these at school for my son. He's in first grade and has sensory
processing disorder, which makes it very difficult for him to tune out
noises and focus in the classroom. These earplugs diffuse just enough
noise to allow him to attend to his work and to the teacher. He also
uses them during assemblies and in the cafeteria where it's very noisy.
They're much more discrete than the headphones often used to help
children in classroom settings.
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