Completely compostable and plastic-free, the handle is made from responsibly harvested bamboo, and the medium-soft plant-based bristles made from castor bean oil. This toothbrush is designed to keep both your smile, and the planet, clean. It is estimated that over 3.6 BILLION plastic toothbrushes end up in landfills...annually! Let's reverse this so that our grandkids can have a cleaner future. For best results, replace your toothbrush every few months. When it is time for a new one, simply toss it in the compost bin. The box is recyclable or compostable too, with simple kraft paper and soy based inks.