SXSP: set of 3 soft tooth brushes, setup of more than 2,500 fibers with diameter of 0.15 mm.
SXSS: set of 3 supersoft tooth brushes, setup of more than 3,500 fibers with diameter of 0.12 mm. Gentle and effective.
SXUS: set of 3 ultrasoft tooth brushes, setup of more than 5,500 fibers with diameter of 0.1 mm. Very soft, suitable for sensitive gums.