The sleeping bag experts from Grüezi bag have looked into what the ideal basis for a healthy sleep in a sleeping bag is. The magazine 'Camping& Reisen' recommends the unique products 'Biopod Wool Survial ' and 'Biopod DownWool Nature Comfort' in its 04/2020 issue. Here is the excerpt of the article as a .pdf file for download: Magazine-Camping-Travel-Article-Relaxed Sleep-Issue 04-2020