Includes: Aqua*Medium, Gold*Medium, Purple*Medium and White*Medium. Recycle: Send the toothbrushes back for free so they can be recycled. Biodegradable: The brush handles are bio-based and biodegradable plastic blend with a naturally occurring mineral. The brush bristles are also bio-based. Toothbrushes: Get a year supply 4 pack of eco friendly toothbrushes. Zero waste: Toothbrushes that are returned are turned into new ones! Design: Brushes are sent in 100% recyclable cardboard and each toothbrush is in its own compostable bag for hygiene reasons. Yearly: Replacing your toothbrush every 3 months is important so these four toothbrushes will see you through the year!