Plan toys have been manufacturing toys from sustainable Rubberwood for over 30 years and are the most sustainable toy manufacturer in the world. Their factory is actually carbon pnegative. They actually sell electricity back to the national grid! They are the most sustainable toy manufacturer in the world and their toys are beautifully designed, made and packaged. Plan toys have also pioneered the first wooden toys suitable for water play and use non toxic, natural glues and paints.