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Flex Brush Toothbrush

Meet the RADIUS Flex Brush, a revolutionary toothbrush with flexible neck technology designed to give hard brushers and sensitive gums the gentle, effective clean they deserve. With an extra-wide head packed with over 6500 soft, plant-based bristles, this brush evenly distributes pressure for a luxurious gum massage that’s safe on
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Wide head for a deeper clean and healthier gums
Rubber “Flex-Neck” protects gums & reduces pressure
Non-slip ergonomic grip for better control
6500+ plant-based bristles
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  • Estimated Delivery:Jun 12 - Jun 16

  • Free USA Shipping: On all orders over $35

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Benefits

The RADIUS Flex Brush is engineered for comfort, effectiveness, and long-term gum protection. This extra-large head toothbrush covers more surface area to gently remove plaque while stimulating your gums. With 6500 soft bristles, three times more than a standard brush, this extra wide head toothbrush ensures an extra thorough clean.

The signature toothbrush with flexible neck adapts to your brushing pressure, making it ideal for hard brushers, sensitive gums, and anyone seeking an upgraded cleaning experience that feels as good as it performs.

Materials

  • TPE + EcoPure® (latex-free recycled rubber)
  • Plant-based nylon bristles
  • Packaging: Recycled PET (soda bottles) + recycled cardboard
  • BPA-free and PFAS-free

Sustainability

The Flex Brush proves that a sustainable toothbrush can still deliver incredible cleaning power. Made from recycled, latex-free rubber enhanced with EcoPure®, it biodegrades significantly faster than traditional plastics. Its 6500 bristles last up to 3× longer than standard toothbrushes, meaning fewer brushes are thrown away each year.

Every Flex Brush is crafted in the USA at our Pennsylvania facility using low-energy machines, a commitment to sustainability from handle to bristle.

30-Day Guarantee

We stand behind every RADIUS product. If you don’t fall in love within 30 days, return it for a full refund, no questions asked.

Shipping Info

All orders ship in recyclable packaging. Free U.S. shipping on orders $30+. Learn more in our Shipping Policy.

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FAQs Reviews

More Amazing Details

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More bristles, more surface area, better cleaning.

With 3x the normal toothbrush’s bristles, the wide oval brush head coupled with a flexible neck helps target those tricky-to-reach areas and massages the whole mouth as it goes for an all-over tingly clean, that lasts 3x longer than other run-of-the-mill toothbrushes.

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“Flex-Neck” Technology meets award winning easy-grip design.

The design of the Big Brush with a twist, made from flexible recycled rubber with a soft head stems, the angled neck reduces pressure on gums and teeth — especially if you’re a hard brusher.

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Created to keep your teeth and the world clean.

From the recycled rubber handle to the vegetable-based nylon bristles, the RADIUS Flex Brush is eco-friendly from top to bottom.

Customers Raving About RADIUS

Frequently Asked Questions

Answers to common questions to help you understand things better.

Do you have any smaller toothbrushes?

The Flex Brush has an extra-wide head by design. If it feels too large, the Source Toothbrush is a great alternative with a slimmer, longer neck and a 50% smaller head — but still packs 200–300% more bristles than an ordinary toothbrush.

How often should I replace my toothbrush?

RADIUS toothbrushes can last up to 3× longer than conventional brushes. Replace your Flex Brush every 3–6 months or whenever the bristles begin to fray.

Is the RADIUS Flex Brush biodegradable?

Yes. The Flex Brush is a biodegradable, sustainable toothbrush made from recycled rubber infused with EcoPure® to help it break down faster than standard plastics.

Is the Flex Brush good for hard brushers?

Absolutely. The toothbrush with a flexible neck design absorbs pressure to protect your teeth and gums, making it ideal for hard brushers.

Is the Flex Brush good for sensitive gums?

Yes. Its wide head toothbrush and soft, plant-based bristles gently massage gums while evenly distributing pressure to help prevent recession and bleeding.

Where is the RADIUS Flex Brush made?

Every Flex Brush is crafted in the USA at our Pennsylvania facility using low-energy machines, a commitment to sustainability from handle to bristle.