Hummm Sound earplugs allow the user to hear noises clearly, just at lower levels. Whether begin used in calmer situations like travelling on airplanes, sleeping or studying, or at music concerts, loud events, adventure sports, and DIY environments, Hummm Sound gives you peace of mind.
If you have more questions, please contact us by email at info@cambridgemask.com or Chat button on our sites to connect with our Customer Service Team.
