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Tested according to ANSI Specs S3.19-1974
The level of noise entering a person's ear, when hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Noise Reduction Rating: 32 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)
| Attenuation Chart (ANSI S3.19-1974) | |||||||||
| Frequency | 125 | 250 | 500 | 1000 | 2000 | 3150 | 4000 | 6300 | 8000 |
| Mean Attenuation (dB) | 36.1 | 37.4 | 39.7 | 38.6 | 38.5 | 44.6 | 45.4 | 47.4 | 48 |
| Standard Deviation (dB) | 3.6 | 4.9 | 4.3 | 3.1 | 2.7 | 3.2 | 4.1 | 3.2 | 3.2 |
Example:
Ear plugs must be inserted properly for optimum performance.
Practice of insertion is recommended. Please refer to the audio and video instructions at HEAROS.com. discard product after several uses or as soon as dirt or wax accumulates on ear plugs.
Keep away from infants. This product is non-toxic but may interfere with breathing if caught in windpipe.
For noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level should be used. Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the above instructions for proper fit. Although hearing protectors can be recommended for protection against the harmful effects of impulsive noise, the Noise Reduction Rating (NRR) is based on the attenuation of continuous noise and may not be an accurate indicator of the protection attainable against impulsive noise such as gunfire. The Noise Reduction Rating (NRR) calculated from the attenuation data is 32dB. Ear plugs must be properly fitted to attenuate noise effectively. Refer to instructions.
Verified Purchase
i bought these locally for almost double the price. So here they are good price. i have used these before. i live in multicomplex with people outside my window coming and going etc. and also it is good for health to sleep more soundly uninteruppted and i do. when i use earplugs, i sleep better and stay asleep until the morning. they are comfortable , i use these nightly. but if not sure how to use ear plugs look up online. and try in the day for a half hour to get used to it. these are comfortable and are good decible range of blocking out noise. no matter what your sleep issue is. try these and you will sleep more soundly. you can still hear with them.its just a muffled sound. so you can still hear your alarm. althoguh i have misssed the postman at my door a few times! i purchased two packs and will order more again. !
Posted by iHerb Customer on April 15 2018 | Verified Purchase
I bought this for my long flights, and it helped a lot!
Posted by iHerb Customer on March 30 2018 | Verified Purchase
These earplugs are so soft and fits pretty well. It blocks most of the sounds from my roommate at night and is amazing fit for my small ears.
Posted by iHerb Customer on March 18 2018 | Verified Purchase
I’m so glad I ordered 3! These are amazing.
