Flents Protechs, Силиконовые беруши Seal-Rite, 3 пары + футляр

• Noise Reduction Rating: 21 NRR

Conforms to your ear to seal the ear canal entrance.

Seal-Rite® Silicone Ear Plugs help to seal out water when worn properly. Great for swimming.

Information Required By EPA: The level of noise entering a person's ear, when a hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR. 

Example: (1) The environmental noise level as measured at the ear is 92 dBA. (2) The NRR is 21 decibels (dB]. [3] The level of noise entering the ear is approximately equal to [92 dB(A) - 21] 71 dB(A).

Noise Reduction Rating: 21 Decibels (when used as directed)

The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (higher numbers denote greater effectiveness).

1. With clean hands, roll plug between fingers to soften. Use entire plug. 

2. Shape plugs into a ball. 

3. Place plugs against ear openings and flatten firmly. Just cover ear opening. Do not force into ear canal.

Seal outer ear only. Do not insert inside ear canal.