[Professional noise reduction earplugs], sleep comfortably and sleep soundly. Shaped earplugs. The special-shaped earplugs can adapt to the different ear canals of each person to achieve a good fit, so that your feeling of use will not be affected.[In order to have better sound insulation effect] For better sound insulation effect, please clean the ear canal with cotton swabs or napkins first, then take out the shaped earplugs, divide the earplugs into two, squeeze the earplugs into a strip, and use your index finger Press the earplugs and insert them into the ear canal to fill it. The molding is completed, and the noise is shielded.[Shapeability] Not only is it suitable for different ear canals, but compared to sponge earplugs, the molded earplugs are smoother and will not feel swelling and pain after wearing for a period of time. After a long time, it is still very comfortable and sound insulation effect is good.[Comfort] Designed for comfort, a large number of 3D scans of geometric structures were performed, and a small pea-sized earplug was made based on this data, which is flexible and comfortable and fits the contour of the upper ear. It is suitable for use in the library, sleeping and some noisy scenes.