Yvon Chouinard, the co-founder of Patagonia an outdoor clothing company, made a mummy-style sleeping bag for himself 45 years ago. It is a simple and custom made sleeping bag with overstuffed channels and a straight down zipper at the center front to allow for easy cooking and belaying. During that time, it was part of his emerging idea for revolutionary outdoor gear. For many years, Patagonia’s down technology has been very enthusiastic to environmental stewardship and also in achieving the lightest, toughest and warmest down insulation. After 45 years of expertise in down construction, Patagonia set-out a modernized version of Yvon’s sleeping bag, the 850 Down Sleeping Bag.
The 850 Down Sleeping Bag is available in two versions. First is a 19°F sleeping bag with a unique cut that keeps down protected and lofty, and a no sewn-through areas. Second is a 30°F with visible, simple stitches. Both sleeping bags contain a premium 850-fill down, has a large drawstring hood, a roomy foot box, a main shell ultralight Y-yarn nylon, and a silky and smooth Patagonia Houdini fabric liner. It is now available for purchase at a price range depending on temperature and size.