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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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Purple & Purple
Mint
Electric Blue
Lime
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  • Estimated Delivery:Apr 09 - Apr 13

  • Free Shipping & Returns: On all orders over $30

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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

Flex Brush Toothbrush

Single / Right / Watermelon

The RADIUS Difference

Built Different. See It in Action.

Experience the Difference

Sustainable design from the first sweep to the last.

6500 Soft, Plant-Based Bristles

This toothbrush with lots of bristles delivers 3× the bristle count of ordinary brushes. Each bristle helps lift plaque, sweep away buildup, and gently massage your gums — giving you a superior clean every time you brush.

Flexible Neck for Hard-Brusher Relief

The signature toothbrush with flexible neck bends with your natural brushing motion to protect gums and enamel. It absorbs excess pressure to prevent recession and bleeding — perfect for adults who brush too hard.

Ergonomic Recycled Rubber Handle

Designed for comfort and control, this ergonomic toothbrush features a non-slip grip made from recycled, latex-free rubber. Left- and right-handed designs ensure better reach, better control, and better brushing, even for users with mobility challenges

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.