7 pair & free case. No. 1 selling women's sleep ear plugs. Helps block snoring & noise. Silky soft & comfortable. Doctor recommended. www.SleepinPink.com. SleepInPink.com. 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.