These reusable, silicone sleeves form a tighter seal than flex sleeves while holding the earphones firmly in place. The sleeve tube or flange can be trimmed for customization and greater comfort.Includes 3 pairs of Triple Flange Sleeves. For SE model earphones (except SE102MPA), as well as E3c, E4c, E5c, E500, i3c, and i4c models.