【Noise Reduction】 The noise reduction performance of this product complies with the US standard ANSI S3.19-1974, with an NRR (Noise Reduction Rate) of 33dB (highest grade) and SNR of 38dB. These are earplugs that can withstand professional use. 【Black Earplugs and Transparent Cord】 Earplugs with a cord are less likely to be lost, and can be hung around the neck when removed, allowing for immediate reuse. The black earplugs are less likely to attract the attention of those around you, and the transparent cord is also difficult to distinguish. These color schemes make it less noticeable that you are wearing them, making them ideal for working or studying in cafes. 【Soft, Slim, and Slow Rebound】 Made with skin-friendly super soft PU foam, the sponge has many fine holes, providing a gentle fit. The surface is glossy, and the remarkable feature is its shape memory performance, which slowly returns to its original shape over time. Therefore, after wearing them for a while, they will fit the shape of your ear. 【Specifications tailored to the size of Japanese ears】 The slim specifications are designed to fit the smaller ears of Japanese people, reducing discomfort and pain even during long periods of use. They can be used in a wide range of environments, such as at home, on public transportation, in libraries, and in cafes, providing the best soundproofing effect. ／ No comments needed! Immediate purchase OK! Midnight silent purchase OK ◎ Follow-up discount information available ♪ ＼ ❣️Bulk purchases are welcome ♪ Please feel free to comment ^ ^ ❣️ Since it has been opened once for inspection and photography, it is listed as "Like New". ❣️ Please understand that it is stored at home and will be shipped in simple packaging ( ¨̮ ) EARS SECRET Black Earplugs with Cord, Transparent Cord 70cm, Individually Packaged, Slim, ANSI Compliant, NRR Value 33dB, Black Soft Foam, Noise Canceling, Black Earplugs, Corded, Ear Plugs, High Frequency, Low Frequency, Airplane, Work, Factory, Study, Soundproof, High Sound Insulation SHADOW L70 10 Pair Pack 18-47 1-49-2⭐︎⭐︎⭐︎