Big Agnes Women's Greystone 20°

The Big Agnes Women's Greystone 20° pairs 600-fill DownTek hydrophobic down with a fully recycled polyester ripstop shell and taffeta liner, arriving at a manufacturer-rated -5°C comfort temperature and -12°C limit rating. With 616 g of fill and 1048 g total weight, it lands mid-pack for a 3-season women's mummy bag — noticeably lighter than the synthetic Elsie 15° at a similar warmth class, thanks to the down fill. A two-way, full-length zipper lets you vent from the footbox or top independently, useful across the wide comfort-to-limit spread this bag covers. The contoured, adjustable hood and oversized draft collar are sized generously for a mummy bag, and PFC-free DWR treatment keeps the water-repellent finish free of the fluorinated chemicals used in older down-proofing methods. Packed dimensions of roughly 48 x 19 cm keep it reasonably compact for a backpacking pack. Given the recycled shell materials and hydrophobic down, this is a solid choice for environmentally conscious 3-season backpackers who want down's weight advantage without babying the bag around moisture.