Meet the ISPO Award winner in the category "Product of the Year" 2019: the Grüezi Bag Biopod DownWool. The German brand @gruezibag is developing sleeping bags made of 100 % natural materials, from the packaging down to the last button. Even though down or synthetic fibre was usually the preferred material for sleeping bags, founder Markus Wiesböck has developed a solution to use the positive characteristics of wool, which acts like a natural air conditioner - sleep wool