Medium - Soft nylon castor, BPA-free bristles to protect your gums from bleeding or scratching (charcoal colour is also charcoal infused).
packaged in recycled kraft paper box which is also biodegradable or recylable.
Bristles: contains Nylon and should ideally be removed before composting or reusing the handle. Here is a link to a video by The Wise Consumer showing how easy it is to pull the bristles out, BRISTLE REMOVAL VIDEO alternatively you can snap the head off the brush) the handle can be reused in craft projects or as garden markers or sent to be composted.
As with normal toothbrushes it is recommended you replace your toothbrush at least every 3 months or sooner if it is showing signs of wear.