On the way to the outdoor fair in Friedrichshafen 2018, the fair visitor Matthias Dittgen was fascinated by the Grüezi bag innovations for 2019 , which he published in a video. He reports on the Grüezi bag Biopod DownWool Nature and Biopod DownWool Subzero sleeping bag models and talks about the DownWool filling material and its special, unique properties. Take a look at his contribution: The link to the video by Matthias Dittgen!