10 pair and carrying case. Smooth, tapered design. Soft comfortable fit. Quality guaranteed. Excellent for sleeping; studying; travel; blowdrying; lawn mowing; power tools; concerts; sporting events. Sound Attenuation Data (ANSI Standard S3. 19-1974) NRR 33. Test Frequencies (Hz) 125, Mean Attenuation (db) 42.4, Standard Deviation (db) 4.9. Test Frequencies (Hz) 250, Mean Attenuation (db) 43.5, Standard Deviation (db) 4.2. Test Frequencies (Hz) 500, Mean Attenuation (db) 45.9, Standard Deviation (db) 4.9. Test Frequencies (Hz) 1000, Mean Attenuation (db) 39.8, Standard Deviation (db) 3.4. Test Frequencies (Hz) 2000, Mean Attenuation (db) 36.8, Standard Deviation (db) 2.0. Test Frequencies (Hz) 3150, Mean Attenuation (db) 44.5, Standard Deviation (db) 3.7. Test Frequencies (Hz) 4000, Mean Attenuation (db) 46.6, Standard Deviation (db) 2.9. Test Frequencies (Hz) 6300, Mean Attenuation (db) 48.1, Standard Deviation (db) 4.6. Test Frequencies (Hz) 8000, Mean Attenuation (db) 47.4, Standard Deviation (db) 4.7. The attenuation values were obtained under laboratory conditions and are for comparison purposes only. The amount of protection afforded may differ depending on how the protectors are fitted and worn. The attenuation values in actual use may be lower. Information Required by EPA: 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. Example: 1. The environmental noise level as measured at the ear is 92 dBA. 2. The NRR is 33 decibels (dB). 3. The level of noise entering the ear is approximately equal to [92 dB(A) - 33] 59 dB(A). Noise Reduction Rating: 33 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). EPA: Federal law prohibits removal of this label prior to purchase. Label required by US EPA regulation 40 CFR Part 211 Subpart B. Questions? 1-888-423-0139. Quality Guaranteed: This TopCare product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed. Earplugs made in USA. Carrying case made in China.