At the beginning of May, I received for testing a Marmot down sleeping bag Never Winter Long. This sleeping bag is Anatomically. Filled with duck down 650 CUI. It is dedicated to a temperature of 3.1 / -2.2 / -18 ° C.
It spent a few nights in a tent in Sokoły, some also were used on the go. However, this is still not enough so I could write about it specifically, so hence a form of "first impressions". The manufacturer's description below, and finally I put my observations.