Grüezi Bag is a young Bavarian brand whose initial aim was to develop an innovative sleeping bag. During the last few decades the main focus in sleeping bag development was placed on improving insulation in proportion to weight and volume. Grüezi's research suggested that if they could improve the climate inside the sleeping bag this would improve sleep considerably. There were sleeping bags filled with synthetic fibre or with down, but strangely none with wool. People have used wool in blankets for hundreds of years. For a few years, wool has been used as an insulation material in winter jackets, which works excellently. So why not in a sleeping bag?

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After numerous tests and experiments, Markus Wiesböck, the founder of Grüezi Bag, found the right material mix, and in 2015 he was the first manufacturer to make sleeping bags with Almwolle (wool of mountainsheeps). However, only improving the sleeping climate was not enough for Markus. He also wanted the best insulation and a smaller pack size. After three years of development, Grüezi bag presented the new filling material DownWool, which combines the benefits of down (best product for insulation) and wool (best product for a dry climate). Grüezi Bag still is an owner-operated business managed by its founder Markus Wiesböck. Development is carried out in Bad Feilnbach in Bavaria, at the foot of the Alps.