Big Agnes Anthracite FireLine Pro Eco Sleeping Bag – 20°F, Left Zip, Long, Olive Night/Chinois Green

Overview

The Anthracite from Big Agnes blends lightweight portability with dependable warmth, built for outdoor moments that demand comfort after a long day outside. With FireLine Pro Eco recycled insulation and a soft, water-repellent shell and lining, this mummy-style bag is designed to stay warm without adding bulk. The 20°F specialization makes it a versatile choice for cool nights, late-season camping, and breezy tent mornings. The left-side zipper and well-considered hood help you regulate airflow and get in and out with ease, whether you are setting up in a campground or crawling from a tent after a late snack.

Crafted from recycled fabrics, the shell and lining feel soft against the skin, while the durability helps keep moisture at bay. The bag’s traditional mummy silhouette delivers high thermal value and compressibility, so you can carry it with less fuss on summer treks or backyard camping trips with the kids.

Core benefits

• Lightweight warmth: High thermal value with a compact pack footprint that shines on the trail.
• Draft protection: Contoured hood, insulated tube, oversized anti-draft collar, and no-draft zipper minimize cold air ingress.
• Practical access: Two-way anti-snag zipper on the sleeper’s left side aids quick entry and foot venting on warm nights.
• Recycled comfort: Soft shell and lining fabrics use recycled materials with a water-repellent finish for durability in damp environments.
• Versatile pairing: Left-zip compatibility invites snuggling with a partner bag when sharing a tent mate scenario is part of your plan.

Use cases and scenarios

• Backpacking and multi-day trips where every ounce matters and a reliable sleeping bag is essential.
• Backyard campouts, family adventures, or spontaneous weekend getaways where comfort matters after sunset.
• Car camping and cabin stays that benefit from quick access, warmth, and a dry feel during dewy mornings.

Care, materials, and notes

The Anthracite uses FireLine Pro Eco insulation inside a shell and lining that feel plush and cozy, while offering a sustainable approach to warmth. The moisture-repellent finish helps you stay relatively dry when humidity looms or dew forms. As with any practical outdoor gear, consider your layering system and local conditions when planning your night’s rest.