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2. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   The PAR is unique to the HPD tested and the individual wearing the protection, and personal fit testing US OSHA and the National Hearing Conservation Association (NHCA) Alliance recommend that employers conduct individual worker noise attenuation measurements (HPD fit-testing) as a best practice and valuable tool for improving employee training.

3. Earmuffs - Wikipedia

   en.wikipedia.org/wiki/Earmuffs

   Two people wearing behind-the-neck earmuffs. Thermal earmuffs are worn for protection from the cold. Because the ears extend from the sides of the head to gather sound waves, they have a high skin surface-area-to-volume ratio, and very little muscle tissue, causing them to be one of the first body parts to become uncomfortably cold as temperatures drop.

4. Hearing conservation program - Wikipedia

   en.wikipedia.org/wiki/Hearing_conservation_program

   Hearing conservation programs [1] are programs that should reduce the risk of hearing loss due to hazardous noise exposure, if implemented correctly and with high quality. . Hearing conservation programs require knowledge about risk factors such as noise and ototoxicity, hearing, hearing loss, protective measures to prevent hearing loss at home, in school, at work, in the military and, and at ...

5. Ear protection - Wikipedia

   en.wikipedia.org/wiki/Ear_protection

   Ear protection may pertain to protecting the ear from cold, intrusion by water or debris, or noise. It may refer to: Hearing protection device; Earplug; Earmuffs

6. Hearing protection fit-testing - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_fit-testing

   Wearing or inserting the hearing protection device correctly so it seals the wearer's ear canal, using the "roll-pull-hold" method for foam earplugs, and ensuring earmuffs create an unbroken seal around each ear. [7] Fit-testing hearing protection can facilitate an appropriate choice of hearing protection, and allow for the professional ...

7. Water polo cap - Wikipedia

   en.wikipedia.org/wiki/Water_polo_cap

   A water polo cap is a piece of headgear used in water polo and a number of underwater sports.The caps are used to identify both the player and their team, and to protect their ears from injury possibly caused by a water polo ball hitting the head.