Sea to Summit Flame Ultralight Women's Sleeping Bag 25

The Flame Ultralight Women's Sleeping Bag 25 shares the Flame family's women's-specific mummy cut but trims weight to 665 g through a lighter shell and less fill than the colder-rated 15 model. Box-baffle construction holds 440 g of 850-fill-power hydrophobic goose down (90/10) in place, backed by a two-way, full-length zipper that lets you vent from either end — a useful feature for regulating temperature through a variable night. The 10D nylon shell and 7D liner keep the bag's own weight low, while a draft collar and draft tube along the zipper limit heat loss at the usual leak points. A stuff sack is included for packing. Fit follows the same anatomical logic as the rest of the range: wider at the hip, narrower at the shoulder, sized for users up to 170 cm. This is a solid 3-season choice for backpackers who camp through cool but not sub-zero nights and want a genuinely women-tailored fit rather than a unisex bag sized down.