Lost Dog Series

Lost Dog 15°



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Lightweight synthetic-fill big agnes system bag

The Big Agnes Lost Dog Sleeping Bag is part of our system bag line with FireLine™ ECO synthetic insulation offering a roomy, rectangle-shaped sleeping space with an integrated Flex Pad Sleeve on the bottom. With technical fabrics and construction, 100% recycled, super-warm insulation, and tons of comfort features, these comfortable sleeping bags are designed to be lightweight enough for backpacking but cozy enough you'll want them in the campground too. The streamlined silhouette and Flow™ construction increase the thermal efficiency keeping you warm from head to toe. The Flex Pad Sleeve unites easily with your pad, and as you change positions over the course of the night, will keep you from rolling off your pad.
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What's in a Name?

Lost Dog Creek was named after Steamboat Springs settler John Crawford's hunting dog who went missing in the area while he was hunting bear on a tributary of the Elk River. Lost Dog Creek meanders north of the Seedhouse Campground and Guard Station in North Routt County.

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