Professional yellow noise-cancelling earplugs, sleep comfortably and soundly Alien earplugs The special-shaped earplugs can adapt to each person's different ear canals to achieve a good fit, so that your sense of use is not affected For better soundisolation, first clean the ear canal with a cotton swab or napkin, then remove the shaped earbuds, split them in half, squeeze the earbuds into strips, press the earbuds with your index finger, and insert them into the ear canal to fill it The shapingis complete, and you can start to block the noise Not only are they suitable for different ear canals, but compared to sponge earplugs, the shaped earplugs fit better, and they won't feel swollen and sore for a long time after wearing them for along time, and they are still very comfortable In addition, the ears cannot be used for sleeping, and the sound insulation effect is good Designed for comfort, numerous 3D scans of the geometry were performed, and based on this data, a small pea-sizedearplug was made, flexible and comfortable to fit the shape of the upper contour of the ear Suitable for use in the library, sleeping, some noisy scenes