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  2. 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.

  3. Hearing protection device - Wikipedia

    en.wikipedia.org/wiki/Hearing_protection_device

    Various earmuff hearing protectors. Sound levels of some daily activities. A hearing protection device, also known as a HPD, is an ear protection device worn in or over the ears while exposed to hazardous noise and provide hearing protection to help prevent noise-induced hearing loss.

  4. Chester Greenwood - Wikipedia

    en.wikipedia.org/wiki/Chester_Greenwood

    Chester Greenwood (December 4, 1858 – July 5, 1937) was an American engineer and inventor, known for inventing the earmuffs in 1873. [1] He reportedly came up with the idea while ice skating and he asked his grandmother to sew tufts of fur between loops of wire. [2] His patent was for improved ear protectors. He manufactured these ear ...

  5. Earplug - Wikipedia

    en.wikipedia.org/wiki/Earplug

    Using both ear muffs (whether passive or active) and earplugs simultaneously results in maximum protection, but the efficacy of such combined protection relative to preventing permanent ear damage is inconclusive, with evidence indicating that a combined noise reduction ratio (NRR) of only 36 dB (C-weighted) is the maximum possible using ear ...

  6. The 15 Best Earmuffs to Elevate Your Winter Accessory ... - AOL

    www.aol.com/lifestyle/13-best-earmuffs-winter...

    $170.00 at Net-a-Porter. Bluetooth Earmuff Headphones. If your over-the-ear headphones aren't keeping your ears warm enough during your daily dog walk, try these practical Bluetooth earmuff ...

  7. Personal protective equipment - Wikipedia

    en.wikipedia.org/wiki/Personal_protective_equipment

    In work environments, respirators are relied upon when adequate ventilation is not available or other engineering control systems are not feasible or inadequate. [5] In the United Kingdom, an organization that has extensive expertise in respiratory protective equipment is the Institute of Occupational Medicine. This expertise has been built on ...

  8. Hearing protection fit-testing - Wikipedia

    en.wikipedia.org/wiki/Hearing_protection_fit-testing

    Hearing protection devices such as earplugs or earmuffs must be worn correctly for the wearer to be protected from noise. [4] Correct use of hearing protection includes: Choosing the most appropriate hearing protection device, both with appropriate level of attenuation and appropriate fit for the individual. [ 5 ]

  9. 10 Best Cooling Mats for Dogs That Really Work, According to ...

    www.aol.com/10-best-cooling-mats-dogs-180000423.html

    Chillz Dog Cooling Mat. This easy-to-clean cooling mat is an affordable solution that will keep your puppy cool all summer long. The pressure-activated gel is meant to draw the heat away from ...