Preserve consulted closely with dental professionals to create a toothbrush that gets your teeth cleaner but minimizes your impact on the environment. The design includes a curved handle for those hard-to-reach places and a three-level bristle arrangement to massage your gums. And while the bristles are brand new, the handle is made from recycled #5 plastics (which include things like yogurt cups.) Preserve toothbrushes are recyclable through Preserve's mail-in recycling program.