Grüezi Wool Sleeping Bag Zero ModelTell me more about this Grezi wool sleeping bag This Zero model of the Grezi wool sleeping bag is medium weight and perfect to use from Spring through to Autumn. Insulated with natural alpine wool insulation it helps to ensure you get a good nights rest whatever adventure you are taking it on. High quality, moisture resistant and small once packed, this is the ideal wool sleeping bag for trekking, camping and biking. Weve used it a few times in the