Western Mountaineering Tamarak

The Tamarak is a specialty piece in Western Mountaineering's lineup: a rectangular-cut bag sized for users up to 5 ft (152 cm) tall, rated to 30°F (-1°C) and filled with 850+ fill-power Polish goose down. At 539 g it is light for its rectangular shape, though the fill efficiency figures suggest the rectangular cut costs some warmth-per-gram compared to the brand's mummy models — expected, since a boxier shape sacrifices thermal efficiency for room. Continuous baffles and a full-length, wrap-around YKK zipper are shared with the rest of the range, and the compact scale — combined with RDS-certified down — points this bag at younger or smaller users rather than the general adult market. Its size also makes it a plausible supplementary layer inside a bivy or as an extra warmth boost on cold nights when paired with another bag. Given the -1°C rating and short cut, it is best suited to three-season use for smaller hikers, or as a lightweight, packable children's sleeping bag rather than a primary bag for adult thru-hiking.