Big Agnes Sleeping Bag Buying Guide
Posted by Mark Richardson on Jan 22, 2026
Fly Creek UL
Versatile Down Quilt
Premium materials, like ultralight NetPlus® fabric made from recycled fishing nets and high-quality 850-fill down, along with a sleek design featuring Big Agnes Signature Diamond Quilting, produce a lighter, more packable bag. From the ergonmic footbox to the insulated draft collar, every aspect of this sleeping bag is designed to maximize thermal efficiency, without the need for extra weight and bulk. The result is a technical sleeping bag that is a backpacker's dream, perfect for fastpacking, thru hiking, or any overnight trip in three season temperatures.
Greystone
Down Version of Anthracite Bags
Ideal for backpacking but versatile enough for couch surfing, the Greystone is insulated with 650 Downtek™ PFC-Free, uses baffle construction for efficient heat distribution, and includes a water-resistant coating to keep you dry. If you’re in the market for a high quality, lightweight mummy shaped bag that packs small and keeps you toasty in the backcountry, the Greystone is your ticket to getting out there in comfort!
2026 Greystone 30 Down Sleeping Bag Regular (Comfort Limit: -2°C, Weighs: 841g ex. bag)
Women's Greystone 30 Down Sleeping Bag (Regular Comfort Limit: -8°C, Weighs: 870g ex. bag)
2026 Greystone 20 Down Sleeping Bag Regular (Comfort Limit: -8°C, Weighs: 998g ex. bag)
2026 Women's Greystone 20 Down Sleeping Bag Regular (Comfort Limit: -12°C, Weighs: 1120g ex. bag)
2026 Greystone 0 Down Sleeping Bag Regular (Comfort Limit -15°C, Weighs 1562g ex. bag)
Sidewinder SL
Mummy Bag Designed for Side Sleepers
Side sleeping in a regular bag can be uncomfortable for some; they can be hard to toss and turn in, get wrapped up in the bag, and sometimes it can make the bag cooler as you blow condensation into the side of the bag as you sleep.
This sleeping bag has a unique “cocoon” style relaxed fit that keeps the insulation where you need it, close to the body; the ergonomic design stops cold air from entering the bag when you sleep on your side. Extra insulation has been added to the feet and hips to help alleviate pressure points.
Anthracite
Synthetic Version of Greystone Bags
The Anthracite traditional mummy style sleeping bag is designed to provide superior rest after a long day spent outside. Stay cozy with Fireline™ Pro Eco recycled synthetic insulation and stay dry with a durable moisture repellent coating. Lightweight enough to stuff in your pack for summer backpacking but comfortable enough for backyard campouts with the kids, this bag is so versatile and comfortable you’ll want to take it on every outing!
2026 Anthracite 30 Synthetic Sleeping Bag Regular (Comfort Limit -1°C, Weighs 934g ex. bag)
Women's Anthracite 30 Synthetic Sleeping Bag Regular (Comfort Limit: -6°C, Weighs: 1140g ex. bag)
2026 Anthracite 20 Synthetic Sleeping Bag Regular (Comfort Limit -8°C, Weighs 1221g ex. bag)
2026 Women's Anthracite 20 Synthetic Sleeping Bag (Comfort Limit -10°C, Weighs 1360g ex. bag)
Torchlight EXP
Adjustable Bag, Ideal for side sleepers
Easily adjust the Torchlight EXP's fit to your individual sleep style and body shape, and change it up easily whenever you need! Patented expandable side panel design adds up to 10” / 25cm of space wherever you choose - shoulders, hips, feet or your whole body. Fully insulated with 650 Fill Downtek™ PFC-Free water-repellent down, this bag keeps you warm all over while the integrated PadLok™ Sleep System keeps you on your pad all night long.
Lost Ranger UL 3N1 Series
2 Bag System that Combines to give you 3 Options.
The Lost Ranger 3N1 0F offers a practical, well-executed take on modular sleep systems. The two-part design features an inner mummy bag and a quilted outer bag, which function across three configurations. Fit is a strong point. The semi-rectangular outer feels roomy while the mummy contours comfortably for cooler nights. The Padlock system keeps everything aligned with your mat, and the Pillow Barn adds real value for side sleepers. It is a relief not sliding off your mat or chase a drifting pillow in the middle of the night.
Echo Park
Spacious Synthetic Bag that balances Comfort & Practicality
The Echo Park offers a generous wide-long fit with effective synthetic insulation and a smooth cotton-blend lining. The dual-sided zip design allows for easy ventilation, and the wraparound hand pockets provide a flexible, quilt-like feel.
The Padlok system keeps it anchored to mats without slipping. While not compact enough for ultralight backpacking, it’s a reliable option for base camps, vehicle-based trips or one or two-night wild camping trips where comfort, breathability, and warmth take precedence over pack size. Durability and loft retention are both strong points.
King Solomon
Double Bags for Couples
The Big Agnes King Solomon 20F delivers exactly what a double bag should: generous space, reliable warmth and smart packability. The updated Cinch Pad Sleeve system neatly secures one double mat or two singles without fuss. The full-zip top section transforms it into a shared comforter or solo quilt, which works well for mixed setups or fluctuating temperatures.
The down insulation (650 fill) holds up well in cooler conditions, though; I'm not sure I'd push it to its -7°C rating. The wide cut through the shoulders and the dual entry points give it a relaxed, bed-like feel, while details like the oversized draft collar and interior hand pockets make it easy to settle in for the night.
Dream Island Doublewide
Doublewide Synthetic Bag with Comfort-Focused Features
At 3988g, the Dream Island 20 is designed for base camps or vehicle-based trips, not weight-sensitive setups. It offers excellent space for two sleepers up to 198 cm, with a wide, quilt-style layout and separate corner hand pockets for added comfort. Dual-sided zips and a detachable quilt top provide flexible venting options, while the Padlok system keeps either one double pad or two singles securely in place. The FireLine Max Eco insulation delivers reliable warmth to around -7 °C. It’s well-constructed, retains loft, and feels stable and breathable throughout the night.
On this post we look at the Big Agnes sleeping bags that we stock and tell you a bit about them so you can choose the best one for you. — Big Agnes makes these two specialist bags ideally suited to Mountain Marathons and Ultralight Backpacking and because not everyone likes Down the V Notch is a synthetic option which nonetheless only weighs 582 grams. Both are ideal as a summer bag and despite being described as minimalist, they both have a reasonable feature-set.