This NEW version of the Truthbrush looks the same to the naked eye but now comes with plant based bristles! The bristles are made with 62% castor bean oil and 38% nylon and so contain more plant and less petrochemicals! The bamboo toothbrush from Truthbrush is beautiful, luxurious and biodegradable. The rounded ergonomic handle is crafted from sustainable, organic bamboo which is naturally anti bacterial. By switching to bamboo toothbrushes you could save 1000's of plastic toothbrushes entering the oceans throughout your life time. Every single plastic toothbrush you've used in your life time is still on the planet and that just seems crazy to me! Try your first bamboo toothbrush and you'll never go back! Please be aware that as the bristles still contain 38% BPA-free nylon the bristles must be removed and put in 'normal' waste before putting the handle in your compost bin. Tip - I save my old ones for cleaning hard to reach places in the house and only get rid when I really need to!