Product Overview
The Big Agnes Anthracite backpacking sleeping bag delivers reliable warmth and comfort for three-season adventures, combining sustainable materials with technical performance. Designed for hikers and outdoor enthusiasts who value both packability and thermal efficiency, this mummy-style bag uses high-quality down-like insulation to provide excellent heat retention without excessive weight. Its thoughtful construction includes features like a contoured hood, draft prevention systems, and an anti-snag zipper, making it ideal for overnight trips in mild to cool conditions across North America and Europe.
Key Features
- LIGHTWEIGHT & PACKABLE: The traditional down construction offers high thermal efficiency with exceptional compressibility. The Anthracite packs down to just 9” x 9”, making it easy to fit inside most internal-frame backpacks while keeping total weight low at 2 lb 12 oz (Regular size). This ensures you can cover long distances without sacrificing nighttime warmth.
- WARM & COZY: A contoured hood follows the natural shape of your head and neck, providing a secure seal that maximizes heat retention. The low-profile cordlock allows one-handed adjustment for quick comfort changes on the trail. An insulated tube along the upper hood opening prevents cold drafts when fully cinched, and the built-in oversized anti-draft collar further enhances thermal protection.
- RECYCLED MATERIALS: Both the shell and lining are made from GRS-certified recycled polyester ripstop fabric (20D), supporting environmentally responsible manufacturing. The insulation is Fireline Pro Eco—a 100% post-consumer recycled polyester insulation that mimics the warmth of down with silky fibers, high loft for efficient heat trapping, and excellent compression characteristics for compact storage.
- EASE OF USE: The two-way, anti-snag zipper runs smoothly and allows you to unzip from the bottom to ventilate your feet during warmer nights. This design improves breathability and comfort without compromising overall insulation when fully closed.
- ACCESSORIES INCLUDED: Comes with both a storage sack and a compact stuff sack for organized transport and easy stowing. Exterior loops also allow for hang drying or temporary storage when not in use.
Technical Specifications
- Season Rating: 3-Season
- Temperature Rating: 20°F (-7°C)
- Weight: 2 lb 12 oz (Regular size)
- Packed Size: 9” x 9”
- Height Capacity: Up to 6’ / 183 cm
- Shell Fabric: 20D polyester ripstop (recycled)
- Lining Material: Recycled polyester (GRS certified)
- Insulation: Fireline Pro Eco (100% post-consumer recycled)
- Zipper Type: Two-way, anti-snag
- Draft Collar: Oversized, built-in
- Hood Features: Contoured, cordlock, insulated tube
- Included Accessories: Storage sack, stuff sack, exterior drying/storage loops
Benefits & Use Cases
The Big Agnes Anthracite is engineered for backpackers who need dependable warmth in dry to slightly damp conditions during spring, summer, and fall expeditions. Its three-season rating makes it suitable for a wide range of environments, from coastal trails to alpine campsites across North America and Europe. The high loft of Fireline Pro Eco insulation efficiently traps body heat, ensuring comfort even when temperatures dip near the 20°F mark.
One of its standout advantages is versatility in group settings. Left-zip and right-zip models can be zipped together to form a double-wide configuration, allowing tent partners to share warmth and reduce overall pack volume. This feature is especially useful for couples or friends traveling together, enhancing both comfort and space efficiency.
Beyond performance, the Anthracite reflects Big Agnes’ commitment to sustainability through the use of recycled materials throughout its construction. The GRS-certified face fabric and lining, combined with post-consumer recycled insulation, appeal to eco-conscious adventurers without sacrificing durability or functionality. Whether you’re setting up camp near a mountain summit, hiking through forest trails at dusk, or spending a weekend in the woods, this sleeping bag offers a balanced mix of warmth, lightness, and responsible design.
Important Notes
- This product is imported and assembled by Big Agnes using globally sourced components.
- Not rated for extreme winter conditions due to its three-season classification.
- Care instructions should follow manufacturer guidelines; down-like insulation may require special washing procedures if damaged.
- Package includes only the sleeping bag, storage sack, and stuff sack—no additional accessories.
- Exterior drying loops are provided but do not support hanging the bag from trees without proper protection.
