Sleeping bag World Roof

this five-season expedition sleeping bag is designed for the keen mountaineer and built to offer protection in extreme environments and weather conditions. Expert Series The World Roof casts a comfortable and incredibly warm K Dry Down, a goose down protected from dampness using a fluorocarbon free treatment that creates a barrier that repels water while maintaining the down’s puff and thermal capacity, even in wet conditions. An insulated shoulder collar, inside, seals the heat and a shortened zippered opening with a double anti-cold flap reduces the space for cold to get in when you slip in. In lab tests, its comfort limit is -20°C. But it was proven to cope with far more intense cold, based on expedition feedbacks.