Down, wool or both? The high-quality sleeping bag ' Biopod DownWool Ice 185 ' from Grüezi bag was subjected to the endurance test. You can find out more in the test of the online magazine 'OUTSIDEstories' from October 2019. Here is the link to the test report: Outsidestories Test-Biopod DownWool Ice 185-Gruezi bag-Oct 2019 Ideal in wet and cold weather - the heat source ' Biopod DownWool Ice 185 ' from Grüezi bag. Convince yourself!