Big Agnes Lost Dog 30°

The Big Agnes Lost Dog 30° is the mildest synthetic bag in the Lost Dog line — a manufacturer-rated -1 °C limit puts it on the edge of three-season and mild winter use, better suited to spring, summer, and early autumn than real frost. The FireLine ECO insulation, made from 100% recycled polyester, weighs 737 g, and total bag weight is 1362 g — given the relatively mild temperature class, that is a fairly heavy piece of kit, the price of synthetic fill and a mummy shape built more for comfort than minimum grams. A DWR-treated nylon ripstop shell and polyester liner resist moisture better than untreated fabrics, and an insulated collar with a draft tube along the zipper cut heat loss at the seams. A stuff sack and storage sack are included, and pad loops let you clip the bag to a sleeping pad. It suits users who favor synthetic fill for moisture resistance and lower cost over minimum weight — for colder nights, the warmer 15° or 0° versions are available in the same line.