Looking for the ideal companion for trekking or hut tours? Read the test report from the Swiss magazine 'ICH LIEBE BERGE': They report on the comfortable ' Biopod DownWool Extreme Light 175' from Grüezi bag . Here is the link to the article: Magazine-I love mountains-gruezi bag-Biopod DownWool Extreme Light 175 review from Nov2019 Do not only dream of a 'sleeping bag favourite' with so little weight, which is very suitable for backpacks, but convince yourself!