The Versa 600 Sleeping Bag 700 Duck Down is part of Exped's Trekking series. The sleeping bags in the Trekking category are designed to withstand the rigors and go anywhere. The Versa line is extra wide, comfortable, affordable, and versatile. The flat design allows these bags to be opened completely for use as a blanket. Ideal bags for travel and camp.The warmer option in the Versa series for travelers and trekkers that need the extra warmth when temperatures drop to freezing. The foot end opens up completely for comforter use.Exped guarantees that their down originates from ducks and geese reared in a livestock friendly environment. They are given access to outdoor grazing, a constant supply of water, fodder, and shelter, and are free from force feeding for liver production and live plucking. The down originates from Poland, Ukraine, or Russia. Their German supplier is a traditional, well established company with a 120 year history in the field and is independently certified for the above criteria.