She is a hundred years old. There is only one shape. Unchanged. In October 2003 we celebrate the centennial anniversary of the thermos flask - a bottle that stands out as being simultaneously economical, ecological, and elegant. The Burger family and the company "elfzehn" would like to invite you to a presentation of the story of the thermos flask and of his inventor - Reinhold Burger. We wish to extend a warm welcome to you and are looking forward to receiving your comments. We hope that the next time you will be using the thermos flask you will be thinking of the inventor and his story. This site was kindly created by "elfzehn", a software company co-founded by a great grandson of the inventor which resides in his former offices and workshops.