Product features: suitable for various sizes of ear canal, breathable, soft and comfortable; Before entering the ear, first knead the memory sponge to the minimum (about 5 seconds of rebound time, the longer the rebound time, the better the quality of the memory sponge), and then insert it into the ear. The sponge will slowly expand and fill according to different ear canals; The memory sponge ear cap has a certain sound insulation effect than the ordinary silicone ear cap, which is close to the ear, making the music completely rebound in your ear, and strengthening the bass effect; Exclusively designed storage box, which can be put back into the box after use to prolong the service life of ear cap Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia