FOREO ISSA Hybrid Replacement Brush Head, Cool Black;

Hybrid replacement brush head for all ISSA electric toothbrushes (except ISSA micro/play). Combination of PBT polymer and silicone bristles delivers a stronger clean to remove plaque build-up while the outer silicone bristles comfortably massage the gums and inhibit over-brushing, preventing gum recession and damage to tooth enamel. Ideal for users who seek a stronger clean and have more plaque build-up due to their lifestyles or natural predispositions. Requires replacing just twice a year.