Sea to Summit Flame Ultralight Women's Sleeping Bag 35

The Flame Ultralight Women's Sleeping Bag 35 is a spring-and-summer mummy bag rated to a comfort temperature of 2°C, with a limit of -4°C and an extreme rating down to -21°C for margin in unexpected cold snaps. At 505 g in Regular size it is one of the lighter bags in the Flame range, helped by a half-length, right-side zipper rather than a full-length one and by a modest 310 g fill of 850-fill-power hydrophobic goose down. The 10D nylon shell and 7D liner keep fabric weight to a minimum, while a draft collar and draft tube guard the usual cold-air entry points despite the shorter zip. Both a stuff sack and a separate storage sack are included, the latter useful for long-term loft retention between trips. As with the rest of the Flame line, the cut is women-specific — wider at the hip, narrower at the shoulder — and sized for users up to 170 cm. This bag suits warm-season backpackers and thru-hikers prioritizing low pack weight over deep-cold capability.