Best 0 Degree Sleeping Bags of 2025

BEST WINTER BACKPACKING SLEEPING BAG

The Western Mountaineering Kodiak MF is a four season sleeping bag that was designed for backpackers who want to brave extreme conditions in comfort. 

While there are plenty of excellent winter sleeping bags out there, the Kodiak MF is our top choice because it is seriously warm and comfortable. While other bags are equally as toasty, they have a narrower fit that makes them constricting. When it is cold out, we tend to spend more time inside our bags and appreciate the extra room. The Kodiak MF adds a few inches in the shoulders and is generously packed with down making it super lofty. The spaciousness also gives you the option to stuff in an extra quilt if you need to add some warmth. Considering how warm this bag is, it packs down incredibly well. 

If you’re just getting into backpacking the price tag might seem ridiculous but for serious backpackers who value high end gear, it’s a worthy investment. Also, like with all proper winter sleeping bags, the versatility of the Kodiak is limited. It would be way too warm for summer backpacking trips and overkill in mild Spring weather.

The Kodiak MF is also available in a 6 foot and 7 foot version.

BEST BUDGET WINTER SLEEPING BAG

The Marmot Trestles 0 is a real find for hikers wishing to explore cold environments. With a durable SpiraFil synthetic insulation, the sleeping bag will keep you warm at temperatures as low as 1.9°F. A 3D hood will provide warmth and comfort for your head; you can also cinch it tightly around your face during freezing nights. Another great feature of the Marmot Trestles is the foot box, which ensures extra comfort and warmth where it’s most needed. 

The Trestles 0 has a full-length, two-way zipper built to prevent snagging. There is also a fold-down second zipper that provides fresh ventilation. In case you need anything during the night, there is an external stash pocket for your essentials. Additionally, the bag has two hang loops for storing or drying out the bag.

If you’re on a budget and looking for a highly affordable, cold-bearing sleeping bag, then definitely consider the Kelty Cosmic 0. This bag, although ringing in at a lower cost, will keep you warm down to 2 Degrees Fahrenheit and it comes equipped with all the features you need for a good night’s rest. A draft collar ensures warmth around the neck while the water repellent coating easily wicks away moisture. 

Pack this bag if you’re thinking about a quick, cold weather expedition. You probably won’t want to rely on this bag for long duration expeditions, where you may be spending a lot of time in your tent, but if a quick in-and-out journey is on the docket, then definitely consider saving yourself some money and going with the Kelty Cosmic 0.