Western Mountaineering HighLite

The Western Mountaineering HighLite belongs to the brand's ExtremeLite line and, at 425 g total, ranks among the lightest mummy bags in the catalog. It's filled with 198 g of 850+ fill power goose down, with a manufacturer-rated comfort temperature of 2°C and a limit of -3°C — a realistic three-season range rather than an inflated figure. The 12D ripstop nylon shell is extremely light, and the baffle construction is sewn-through, which at this weight means small cold spots at the seams in exchange for minimal mass. Unlike the insulated winter bags in the lineup, it skips the full draft collar, though a draft tube along the half-length zipper remains, limiting drafts at what's otherwise a mummy bag's weakest point. Packed to 25 × 15 cm (2.7 L), it's among the smallest packed volumes in the Western Mountaineering catalog, and the short-length cut for users up to 167 cm shaves further weight. It's a benchmark three-season ultralight bag for hikers watching every gram of base weight. Made in the USA.