Big Agnes King Solomon Sleeping Bag Review: Ultimate Double Wide Comfort
When it comes to backcountry adventures with a partner, cozy sleeping arrangements can be tough to find. If you’re tired of cramped, single sleeping bags and want something roomy and warm, the Big Agnes King Solomon Sleeping Bag is designed to change how you camp as a duo. I took a deep dive into this 40-inch double wide sleeping bag with 650 fill Downtek insulation to see if it delivers on its promise of comfort, technical performance, and durability. From features to real-world usability, here’s everything you need to know before you commit to this doublewide sleeping setup.
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Key Takeaways
- Roomy double wide design fits two sleepers comfortably up to 6 feet tall
- Premium 650 fill Downtek down insulation offers impressive warmth at 20-degree rating
- Integrated pad attachment system keeps the bag perfectly aligned with your sleeping pad
- Zippers unzip to convert into separate quilts or one large comforter for flexible use
- Eco-friendly water-repellent shell and lining with PFC-free bluesign approved treatment
- Slightly bulkier and heavier than single bags, which may impact pack load for some users
Specs at a Glance
| Feature | Details |
|---|---|
| Fill Power | 650 Fill DownTek PFC-Free down insulation |
| Temperature Rating | 20 Degrees Fahrenheit |
| Bag Dimensions | 40" wide, fits up to 6' tall sleepers |
| Weight | 3 lb 15 oz |
| Packed Size | 10” x 21” |
| Shell Material | Recycled 20D polyester ripstop, water repellent |
| Lining Material | Recycled 20D polyester taffeta, water repellent |
| Pad Compatibility | Ideal pad size 40"x72", works with double or two singles |
| Zipper Features | Double anti-snap zippers, zip-off quilt feature |
| Storage | Includes mesh storage sack and a smaller stuff sack |
| Color | Asphalt/Chinois Green |
Design & Build Quality
The Big Agnes King Solomon Sleeping Bag impresses straight out of the bag with its thoughtful design focused on space and comfort. The doublewide 40-inch width is noticeably roomier than typical sleeping bags, making it perfect for couples who don’t want to cuddle up too tightly. The asphalt and chinois green color scheme is earthy and practical, blending nicely into outdoor environments. From the outside, the recycled polyester ripstop shell promises durability and has a smooth water-repellent finish that resists light moisture without feeling stiff.
Inside, the bag uses recycled polyester taffeta for the lining, which feels soft against the skin while also offering exceptional breathability. The quality of stitching and finishing underscores Big Agnes’s attention to performance-level outdoor gear. Customers have praised the bag’s craftsmanship, with one user noting it “feels like a cozy double bed in the wild,” highlighting the roomy feel and premium materials.
The innovative double anti-snap zippers run on both sides, making entry and exit easy from either end and allowing the sleeping bag to transform into a large comforter when fully unzipped. This zip-off feature creates two separate quilts if needed, increasing versatility for different camping setups. The top corner hand pockets let you snugly wrap the bag around your shoulders, mimicking the comfort of your home duvet.
One of the most unique design elements is the Padlok Sleep System, which connects the sleeping bag securely to your sleeping pad. This integrated system prevents the frustrating slip-and-slide that can happen with traditional bags, helping you stay cozy and stable through the night. The system uses a cinch drawstring and center strap for extra stability across a variety of pad sizes, particularly ideal for 40"x72" pads. This feature caters perfectly to backcountry couples who move around in their sleep but want to maintain warmth and comfort.
The bag also sports an oversized draft collar and zipper draft tube, locking in body heat effectively, while the “Pillow Barn” inside the pad sleeve holds your pillow or jacket securely in place. Every feature here speaks to a blend of deluxe comfort and technical detail that serious outdoor campers will appreciate.
Real-World Performance
When I tested the Big Agnes King Solomon on a chilly spring weekend trip, it quickly proved its mettle as a premier double sleeping bag. The 20-degree temperature rating with 650 fill Downtek down performed admirably in damp spring conditions. The water-repellent down maintains loft even in slight moisture, which kept me toasty without overheating.
Rolling into the bag was a breeze thanks to the wide design and two-sided zippers. My partner and I appreciated how the bag’s integration with our 40"x72" sleeping pad kept us anchored despite tossing and turning, preventing that annoying predicament of sliding off your pad during the night.
On colder evenings, the oversized draft collar and well-insulated zipper draft tube sealed in warmth around our shoulders, creating a snug microclimate inside. The hand pockets let us pull the bag close like a comforter and adjust temperature using the internal drawcords around the hood. I really enjoyed how I could zip off the top and use it as a separate quilt for warmer nights, offering flexibility based on weather.
For backpackers who don’t want to sacrifice compressibility, the King Solomon still packs down relatively small given its size. It folds to a manageable 10” by 21”, remaining lightweight for a double bag at under 4 pounds. The included mesh sack is practical for long-term storage while the smaller sack is perfect for active use in the field.
Overall, this bag feels like bringing a double bed into the backcountry — roomy comfort, premium warmth, and smart design make it suitable for multi-season adventures with your camping partner.
What Makes It Stand Out?
Compared to other doublewide sleeping bags like the Kelty Cozy Cougar or Therm-a-Rest DoubleRest, the Big Agnes King Solomon offers a few standout features that set it apart. Firstly, the 650 fill Downtek insulation with PFC-free bluesign approved water-resistant treatment is environmentally friendlier and maintains loft better in damp conditions than some synthetic fills or untreated down in its class.
The Padlok Sleep System is a clever, exclusive innovation that few competitors match. This integrated pad attachment system makes restless sleepers smile, keeping the bag perfectly aligned with your pad. Neither Therm-a-Rest nor Kelty currently offer such tailored pad integration on their doublewide bags, which can lead to frequent slipping off pads at night.
Additionally, the convertible design with double-sided zippers that unzip into two quilts or a large comforter gives campers ultimate flexibility. Most competing bags are straightforward double sleeping bags without this quilt versatility, limiting user comfort options. The oversized draft collar and the Pillow Barn for stable pillow positioning also show Big Agnes’s emphasis on thoughtful creature comforts.
The lightweight design of just under 4 pounds also outperforms many synthetic double bags that tend to be heavier. Packability remains reasonable for a doublewide down bag, which is a big plus for serious backcountry users.
These features combine to make the Big Agnes King Solomon a technically advanced and user-focused product, ideal for campers who want both comfort and innovation in one ready-to-go double sleeping solution.
Pros & Cons
| ✅ Pros | ❌ Cons |
|---|---|
| Spacious doublewide design fits 2 sleepers up to 6' | Slightly bulky for ultralight backpacking |
| Premium 650 fill Downtek insulation warms to 20°F | Sleeping pad sold separately |
| Double anti-snap zippers convert bag to quilts | Limited color options |
| Integrated Padlok system anchors bag to pad | Weight close to 4 lbs may be heavy for some |
| Recycled water-repellent shell and lining | Pack size may challenge minimalists |
| Oversized draft collar and Pillow Barn for comfort |
Who Is It For?
The Big Agnes King Solomon Sleeping Bag is perfect for outdoor couples or partners who prioritize comfort and warmth on their backpacking or camping trips. If you enjoy sharing a cozy sleeping setup without sacrificing space, this bag delivers room for two with clever temperature control features.
Backcountry travelers seeking a high-performance double sleeping bag with technical down insulation and innovative pad integration will find this bag hard to beat. It’s especially well suited to those camping in moderately cold temperatures—earns bonus points for its ability to stay warm and dry in damp conditions using PFC-free Downtek.
Additionally, campers who appreciate versatility will love how the bag converts into two separate quilts or a large comforter, adaptable to weather variations or different sleeping styles. If you value eco-conscious gear with recycled materials and bluesign-approved treatments, this bag thoughtfully meets those criteria.
However, ultralight backpackers or solo campers who want compact, ultra-minimal bags may find the King Solomon on the larger and heavier side. But if you need a backcountry bed that feels as comfortable as home, this doublewide sleeping bag is an excellent match for you and your camping buddy.
FAQ
Q1: How does the Padlok Sleep System work?
The Padlok Sleep System secures the sleeping bag to your sleeping pad using a self-equalizing drawstring cinch combined with a center stabilizing strap. This connection keeps the bag aligned with the pad so you won't slide off during sleep. The system fits pads ranging from slightly smaller to larger than 40"x72". This design enhances comfort and reduces heat loss from shifting off your pad.
Q2: Can the sleeping bag be used by one person?
Yes, the King Solomon can be used solo. The sleeping bag zips open fully into a large comforter or two separate quilts, so solo users can easily adjust the size. While it’s designed as a doublewide bag, solo campers wanting extra room and warmth might appreciate the versatility.
Q3: Is the insulation effective in wet conditions?
The bag uses 650 fill Downtek down insulation treated with a water-repellent, PFC-free bluesign-approved chemistry. This treatment helps the down retain loft and insulating properties in damp environments better than untreated down. While not waterproof, the shell and lining’s water repellent finish also help shed moisture to enhance warmth retention.
Q4: What type of sleeping pad is best?
An ideal sleeping pad size is 40"x72". The Padlok system also works with a doublewide pad or two single pads totaling up to 60"x78". Pad thickness isn’t specified but thicker pads combined with the cinch features provide excellent stability and comfort.
Q5: How bulky is the bag when packed?
The King Solomon compresses down to about 10” x 21”. While bigger than single sleeping bags due to its double size, this is considered reasonable packability for a down double sleeping bag aimed at backcountry use.
Q6: How do the temperature settings hold up?
Rated to keep users warm down to around 20 degrees Fahrenheit, it performs well in cool conditions thanks to premium 650 fill Downtek down and draft collars. Internal drawcords and double zippers allow heat regulation to suit personal comfort.
Q7: Does it come with a pillow?
No pillow is included, but the bag features a “Pillow Barn” inside the pad sleeve—a built-in holder that secures your pillow or a stuffed jacket for head support and natural movement during sleep.
Verdict
The Big Agnes King Solomon Sleeping Bag stands out as a deluxe, spacious, and thoughtfully engineered doublewide sleeping solution for backcountry couples. Its smart Padlok system, premium water-repellent down insulation, and versatile convertibility into quilts make it a top choice when comfort and technical performance matter most. If you're ready to bring a true double bed into the wild, this sleeping bag will not disappoint.