The Ascent women's down mummy sleeping bag redefines versatility. Its complex construction and high-quality down make it suitable for various climates and adventures, from long hikes to weekend trips. The ultra-lightweight 750+ RDS Certified goose down provides warmth in cold weather, while the triple-zip Free-Flow Zip system ensures ventilation when it's warmer. Shaped for a natural sleeping position, it's light and compact for any adventure. Features ULTRA-DRY Down 750+ Loft, 90% Down Cluster Premium Goose Down (RDS Certified). The Free-flow zip system includes a full-length YKK® #5 main side zip, a half-length opposite side zip, and a foot zip for excellent ventilation and use as a comforter. Vertical baffles on the chest prevent down shifting during sleep. The shaped hood, oversized draft collar, and zip draft tube retain warmth. An internal pocket is included for a phone, GPS, or valuables. Comes with a lightweight Ultra-Sil compression bag and storage cell. Can be zipped to any men's Sea to Summit sleeping bag to form a snug double. Insulation: 750+ Fill Power, RDS certified Goose Down with Ultra Dry Down treatment for enhanced water resistance. Materials: Recycled 20-Denier Nylon shell and lining; 10-Denier Nylon waterproof-breathable hood and footbox. Zip System: Free-Flow zipper system. Weight: 893g. Fill Weight: 459g. Fits: Up to 170cm. The relaxed mummy fit designed for women offers better heat retention and thermal performance for increased warmth and comfort in cold weather. The spacious design, adjustment cord, and space for a standard Sea to Summit pillow make the Regular Technical Hood comfortable and flexible for car camping and shorter adventures.