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2. Headgear (martial arts) - Wikipedia

   en.wikipedia.org/wiki/Headgear_(martial_arts)

   Wrestling headgear is designed to protect the ears from damage. It features either soft or hard plastic ear covers and straps around the chin and back of the head. It is commonly used in grappling sports such as amateur wrestling, submission wrestling and Brazilian jiu-jitsu.

3. Cauliflower ear - Wikipedia

   en.wikipedia.org/wiki/Cauliflower_ear

   Cauliflower ear is an irreversible condition that occurs when the external portion of the ear is hit and develops a blood clot or other collection of fluid under the perichondrium. This separates the cartilage from the overlying perichondrium that supplies its nutrients, causing it to die and resulting in the formation of fibrous tissue in the ...

4. Mixed martial arts rules - Wikipedia

   en.wikipedia.org/wiki/Mixed_martial_arts_rules

   The most prevalent rule set in the world being used currently is the Unified Rules of Mixed Martial Arts, adopted by all state athletic commissions in the United States that regulate MMA and is used most notably in the Ultimate Fighting Championship. The Unified Rules are the de facto rules for MMA in the United States, and have been adopted by ...

5. Wrestling headgear - Wikipedia

   en.wikipedia.org/wiki/Wrestling_headgear

   Description. The main purpose of headgear is to protect the ears of the wrestler, not really the head as the name implies. Thus, wrestling headgear equipment are also simply called ear guards or ear protectors. The headgear often covers the ears of the wearer, has two straps that go behind the head, two that go over the front and top part of ...

6. Sennheiser SoundProtex Plus review: Concert earplugs that don ...

   www.engadget.com/sennheiser-soundprotex-plus...

   One issue concert-goers may have is the price: the SoundProtex is $39.95 and the SoundProtex Plus is $79.95. A 12-pair box of foam earplugs is $3.49 at my local Target. A more appropriate ...

7. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   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. HPDs reduce the level of the noise entering the ear. HPDs can also protect against other effects of noise exposure such as tinnitus and ...