ADA Accepted - American Dental AssociationNon ToxicChoose Your ToothbrushFits any RADIUS® Big Brush & Source™ BrushBetter by Design™Plant Based InksWater Based Coating100% Toxin FreeLow Energy MachinesWide, Gum Massaging DesignSoft Bio-Plastic BristlesLong Neck For Deeper CleanRemoves Plaque & TarterCruelty-FreeWomen Owned™ Replace, Refresh, Reduce Swap this head out for your worn-out one. Special bristles clean teeth and gums better. Replacing heads instead of throwing a brush away reduces plastic consumption and waste by 93% If everyone in the world switched to Source, 4 billion less toothbrushes a year would end up in landfills Green by design: Saves 93% of brush normally throw into landfills.Bioplastic Bristles Toothbrush Tip: This brush has 3500 bristles (compared to 1800 bristles for other brushes) for a deeper, more complete clean. All RADIUS heads are interchangeable.