Product Description

Well at Walgreens Earplugs Designed to Help Reduce Airplane Noise Ear Pressure Helps Equalize Pressure Helps Relieve Ear Pain While Flying Helps Reduce Cabin Noise 15 dB Noise Reduction Contains 1 Pair Carrying Case Compare to EarPlanes* Attenuation - USA Tested according to ANSI S.3.19-1974 table border=1 cellspacing=1 cellpadding=1 style=width:500px Frequency td 125 250 500 1000 2000 3150 4000 6300 8000 tr Mean Attenuation, dB 24.2 25.7 25.1 25.6 26.6 27.7 27.6 35.1 38.7 tr Standard Deviation, dB 7.0 6.0 6.8 5.3 3.8 3.3 3.6 4.1 3.1 tr tbody table NRR: 15dB The level of noise entering a persons ear, when 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 15decibels. 3. Th