Big Agnes Women's Blue Lake 25°

The Women's Blue Lake 25° is a synthetic mummy bag cut specifically for a shorter, women's fit rather than scaled down from a men's pattern — the short size tops out at 5'5" (167 cm), with a narrower shoulder and hip taper and extra insulation concentrated around the torso and feet, where women often report feeling cold first. Insulation is FireLine Pro synthetic fill, a choice that trades some weight and pack size against down for a bag that keeps insulating if it gets damp. At 1020 g total with a 644 g fill weight and a manufacturer-rated comfort temperature of -4°C (25°F), it sits at the warmer end of the 3-season range, useful for cold shoulder-season nights rather than midsummer trips. A contoured, adjustable hood and dual draft tubes cut heat loss around the head and zipper, while the coupleable design lets it zip to a compatible bag for shared sleeping. A reasonable pick for backpackers who run cold, prioritize wet-weather reliability over minimum weight, and need a fit built around a shorter frame.