Floss Brush Head Replacement. Super Soft. Flossing Bristles. Accepted by ADA American Dental Association. Made in USA. Non Toxic. Clean Teeth and Gums. Better By Design. Radius Replacement Heads boast our signature bed of super-soft, fanned bristles in a swappable pair. Switching one spent head for another instead of purchasing an entirely new toothbrush reduces plastic consumption and waste by 93%. Now thats something to smile about! Gum massaging bristlesThe unique curved bristle-bed ensures our plush bristles clean and massage the gum rather than aggravating them. Choose your bristle type! Our Super Soft Flossing bristles are tapered to get closer to your gum line while our Soft and Medium bristles are end-rounded for a pillow-soft clean. Pair these replacement heads with our Big Brush, Source Brush, or Tour Travel Brush. Longer neck for better reach.A long, thin neck makes cleaning tricky-to-reach spots much easier all the way to the very last molar. Premium, eco-friendly bristles.The soft bristles are made from vegetable-based nylon to reduce our dependence on fossil fuels. The bristles are arranged in an elegant fanned shape, designed to gently yet thoroughly clean and invigorate the entire mouth. Dentist Recommended