Marmot Xenon Women's

The Marmot Xenon 15 (women's) is the standout for weight efficiency in this lineup: 1085 g for a -8°C comfort / -15°C limit rating under EN ISO 23537, giving a warmth-to-weight ratio of 13.8 and around 72 g per degree — noticeably better numbers than the heavier Trestles and Teton bags in Marmot's range. The fill is 800-fill-power RDS-certified goose down with hydrophobic treatment, a meaningfully higher fill power than the 650FP used elsewhere in the lineup, the main driver of the lower weight. The shell is 20D Pertex Microlight nylon ripstop with a DWR finish, paired with a 20D recycled nylon liner, and the bag packs down to a compact 41 x 19 cm — small enough to matter for backpackers optimizing base weight. A fitted contoured hood, insulated draft tube, and internal pocket cover the essentials, and both a stuff sack and storage sack are included. This is the bag for three-season ultralight backpacking and thru-hiking where cold nights are expected but every gram counts.