Natural bamboo, biodegradable, and very soft. These tooth brushes are the best! I have had mine for a while now and no more bleeding gums. Even though they are smallish bristles and very soft they clean so well and I love the fact they are all natural.
I am into the first month with my bamboo brush, it still looks like new! Durable! I have had less bleeding and gum irritation. The brush is small, but it still works, I still get a great clean, it really is fantastic and worth its weight in gold, I like to be using a item that is biodegradable and natural too, less waste and more use! Fantastic buy! I will buy these as gifts too. Jim. MA