Big Agnes Anthracite 20 Women's Regular Right-Zip Sleeping Bag — $70.98, down from $159.95. This women-specific 20-degree mummy bag delivers thermally efficient warmth for backpackers, campers, and cold sleepers. Order online now and stack coupon SAVE15 for additional savings on this deal.
Is the Anthracite 20 Warm Enough for 20 Degrees?
The 20-degree rating reflects the bag's lower limit. The women-specific construction adds insulation where women need it most, making it more thermally efficient than unisex bags of the same rating. Cold sleepers should expect reliable comfort near the mid-20s and can pair it with a sleeping bag liner like the Big Agnes UL Recovery for added warmth in colder conditions.
Comfort Rating vs. Lower Limit
Like most backpacking bags, comfort near the rating depends on your sleep system — pad insulation, base layers, and shelter all matter. For 3-season trips, the Anthracite 20 is the sweet spot; for shoulder-season cold snaps, add a liner or insulated pad.
Can Two Anthracite Bags Zip Together?
Yes. This right-zip women's model mates with left-zip men's/unisex bags, so couples can join two Anthracite bags into one double sleep system. If you need to zip together, pair this right-zip with a left-zip partner bag.
Specifications
- Brand: Big Agnes
- Model/Series: Anthracite 20 (Zirkel Alpenglow colorway)
- Product Type: Women's 3-season mummy backpacking sleeping bag
- Temperature Rating: 20°F
- Insulation: FireLine Pro Eco, 100% recycled multi-denier short-staple synthetic
- Fit: Women's Regular, up to 5'6" / 168 cm
- Weight: 3 lb 2 oz
- Packed Size: 10.5" x 9.5"
- Shell/Lining: 100% recycled polyester ripstop, PFAS-free water-repellent finish
- Zipper: Two-way anti-snag right-side zipper with foot venting
Price Value and Deal Value
At $70.98 vs. $159.95, you save $88.97 — 56% off premium women-specific synthetic sleeping bag technology. Apply coupon SAVE15 at checkout for another 15% off, and orders over $45 ship free. This is one of the most affordable paths to a branded women's 20-degree bag online.
Comparisons and Alternatives
Compared to unisex synthetic bags, the Anthracite's tailored silhouette and targeted insulation deliver better thermal efficiency for the same rating. Down bags compress smaller but lose warmth when damp — the Anthracite's synthetic fill keeps insulating in wet conditions, ideal for humid and Pacific Northwest climates.
