10 Best Below Zero Sleeping Bags 2025 in the United States

The HiZYNICE Zero Degree Sleeping Bag is designed with big and tall campers in mind, offering a generous size of 90 x 39 inches, which is perfect for individuals up to 6 feet 7 inches tall. Its cozy cotton flannel lining provides comfort, while the sleeping bag's temperature ratings—extreme at 0°F, limit at 15°F, and comfort at 30°F—make it suitable for cold weather camping in three seasons. The draft tube along the zipper is a thoughtful addition, preventing heat loss and enhancing warmth during chilly nights.

One standout feature is the anti-snag zipper, which allows for easy access and ventilation. You can unzip the bag from either inside or outside, and it can be opened fully to serve as a mat, making it versatile for various camping needs. Additionally, the ability to zip two bags together is a great option for couples or friends wanting to share warmth.

On the downside, the weight of 7 pounds may be a bit hefty for backpackers looking for ultra-light options. While it packs down reasonably well to 17.01 x 11.89 x 7.01 inches, it might not be the most convenient choice for long treks. The flannel material, albeit cozy, may not be as quick-drying as synthetic alternatives, which is something to consider in wet conditions. Cleaning is easy since it is machine washable, but caution is needed to protect the waterproof coating.

The Coleman North Rim 0°F Big & Tall Sleeping Bag is designed for camping in cold weather, with a temperature rating that goes down to 0 degrees Fahrenheit. It's well-suited for tall individuals, accommodating people up to 6 feet 2 inches in height. The mummy shape, combined with an adjustable hood, helps to seal in warmth, making it effective for retaining heat in cold conditions. The insulation is synthetic polyester, which is durable and retains heat well.

The ZipPlow system is a helpful feature as it prevents fabric from snagging during zipping, and the Thermolock draft tube adds to the warmth by reducing heat loss through the zipper. The bag is relatively heavy at 6.5 pounds, which could be a drawback for backpackers seeking a lightweight option. However, it is easy to pack away in the included stuff sack and is machine washable, which adds to its convenience.

The outer shell is made of polyester, which is durable but may not be as breathable as some other materials. A significant concern is the presence of PFAS, which are chemicals that some might prefer to avoid. This sleeping bag is ideal for camping, glamping, and attending sports events in cold weather, but might not be the best choice for those who prioritize lightweight gear or prefer natural insulation materials.

The Coleman Big & Tall 0°F sleeping bag is designed to keep you warm and comfortable in cold weather conditions. With a temperature rating of 0°F, it’s suitable for winter camping and can handle temperatures as low as 10°F thanks to its 5 pounds of Holofill 808 insulation. This makes it a great option for those who camp in extremely cold environments. The rectangular shape and spacious dimensions (40 x 84 inches) ensure that it can comfortably accommodate adults up to 6'7" tall, making it ideal for taller individuals. The heavy-duty cotton cover and synthetic flannel liner add durability and warmth, and the flannel liner is also cozy and machine washable, which is a plus for easy maintenance.

The no-snag patented zipper and FiberLock technology help prevent the insulation from shifting, ensuring consistent warmth throughout the night. Additionally, the Wrap 'N' Roll storage system makes packing and storing the sleeping bag hassle-free. However, at 9 pounds, it is relatively heavy, which might not be ideal for backpackers or those looking to minimize pack weight. The material blend of cotton and flannel, while comfortable, may not offer the same level of water resistance as synthetic materials, so it might not be the best choice for extremely wet conditions.

Despite these minor drawbacks, the Coleman Big & Tall 0°F sleeping bag is a durable and warm option for winter campers who prioritize comfort and spaciousness.