Anthracite 20° vs Greystone 20°: Sleeping Bag Showdown
By Sleeping Bags, Tents, Pads & Outdoor Gear | Published: 2026-10-22
Category: Comparisons
Compare the Women's Anthracite 20° and Women's Greystone 20° sleeping bags to find the right three-season bag for your backpacking style and budget.
Quick answer
Choose the Women's Anthracite 20° if you want an affordable synthetic bag for damp conditions; pick the Women's Greystone 20° if you prefer the packability and warmth-to-weight of down insulation and can spend more.
Insulation type changes how you pack and where you camp
The biggest difference between these two bags is the insulation. The Anthracite 20° uses FireLine™ Pro Eco recycled synthetic fill, which retains loft when wet and dries faster than down. The Greystone 20° uses 650 fill DownTek™ down, which offers a better warmth-to-weight ratio and compresses smaller for backpacking, but loses insulating power when soaked.
If you frequently camp in humid climates, near water, or expect rain, synthetic insulation gives you peace of mind. If you prioritize a small pack size and lighter weight for long trail miles, down is the clear winner.
Price difference reflects performance trade-offs
The Anthracite 20° is priced around $105 (compare at $160), making it one of the most affordable 20° mummy bags available. The Greystone 20° costs about $207 (compare at $300), roughly double the price. That extra money buys down insulation, lighter weight, and better compressibility.
For a casual car camper or someone on a tight budget, the Anthracite delivers solid warmth without breaking the bank. For a dedicated backpacker who counts every ounce and liter, the Greystone's higher price is justified by the performance gain.
Both bags share sustainable materials and women-specific design
Both models use recycled shell and lining fabrics with a water-resistant coating (no intentionally added PFAS). They also share a mummy shape cut for women, which improves thermal efficiency by reducing excess interior volume. The main choice comes down to insulation preference and budget.
Trade-offs at a glance
- Insulation performance when wet: Anthracite's synthetic fill retains warmth when damp; Greystone's down loses loft and warmth if soaked. Choose Anthracite for wet climates or canoe trips; choose Greystone for dry conditions and weight savings.
- Pack size and weight: Greystone's down insulation compresses smaller and is lighter, ideal for backpackers who need to save space and weight. If pack volume is critical, Greystone is the better choice.
- Budget: Anthracite costs about half the price of Greystone, offering reliable 20° warmth at a very accessible price point. For occasional use or tight budgets, Anthracite delivers great value.
Product facts at a glance
- Women's Anthracite 20°: FireLine™ Pro Eco recycled synthetic insulation with moisture repellent coating without intentionally added PFAS. Synthetic fill stays warm when damp, making this bag a reliable choice for wet-weather camping or high-humidity trips.
Women's Anthracite 20° - Women's Greystone 20°: 650 fill DownTek™ insulation with recycled shell and lining fabrics and a water-resistant coating. Down insulation packs smaller and weighs less than synthetic, so your pack is lighter and more compact for multi-day backpacking.
Women's Greystone 20°
Which bag fits your trip?
Best for
- Budget-conscious campers who need a reliable 20° synthetic bag for car camping or fair-weather backpacking
- Backpackers who camp in damp environments and want insulation that works when wet
Not ideal for
- Ultralight backpackers who prioritize minimal pack weight and volume (consider the Greystone or a higher-end down bag)
- Anyone who needs a bag for consistently wet or rainy trips (the Greystone's down is less forgiving when soaked)
