The Arctic sleeping bags are constructed for use in conditions ranging from rough to the most extreme imaginable. Its outer casing is made from an extra durable and water-repelling shell fabric. The filling is Crystal Down® Dry down with a DWR (durable water-repellent) coating that makes the individual down fibres moisture repellent and faster drying – without compromising the insulation power. The Arctic sleeping bags are tested in the most extreme and uncompromising conditions.