About your brush: self-standing: the Mable brush stands on its own. No need for that old toothbrush cup. Throw that thing out bamboo handle: crafted naturally antibacterial, water resistant, and fully biodegradable. Non-toxic paint: to give your brush a piece of flair that's still friendly, we use a plant-based, non-toxic paint, which is fully biodegradable. Bpa-free nylon bristles: the bristles can be easily removed after use and recycled (see instructions below).Packaging: the cardboard box is recyclable, and we are hard at work to make the protective fabric sleeve fully biodegradable in the near future. Mable life span: your Mable brush will last a long time and perform just as well as any other brush. It’s really all in your brushing technique the American dental association recommends you change your brush every 3-4 months, and we make that easy and convenient with our Mable club membership.