10 Best Below Zero Sleeping Bags 2025 in the United States

The HiZYNICE 0 Degree Sleeping Bag is designed for cold weather camping, offering a temperature rating that goes down to 0°F, making it suitable for extreme conditions. Its cotton flannel lining ensures comfort and warmth, while the polyester shell adds durability and water resistance. The sleeping bag is spacious, measuring 90 x 39 inches, and accommodates campers up to 6 ft. 7 in, making it a great choice for tall individuals and side sleepers who need extra room.

At 7 pounds, it is relatively heavy, which might be a drawback for backpackers looking to minimize weight. However, it is machine washable, adding convenience for regular use and maintenance. The anti-snag zippers are a significant plus, allowing for easy access and ventilation, and the ability to unzip from both the top and bottom. Additionally, the draft tube along the zipper helps retain body heat, enhancing warmth.

One notable feature is that two bags can be zipped together to form a double sleeping bag, or it can be fully opened to become a mat. While packability might be a concern due to its size and weight, the included compression sack helps reduce its volume for transport. This sleeping bag is ideal for car camping and outdoor adventures where weight is less of a concern, and comfort is a priority.

The TETON Fahrenheit Regular 0 Degree Sleeping Bag is designed to provide warmth and comfort for camping in various weather conditions, including cold temperatures down to 0°F (-18°C). Its rectangular shape and soft cotton lining offer a cozy sleeping experience, while the half-circle mummy style hood helps retain heat and keep your pillow clean. The innovative SuperLoft Elite Hollow Fiber insulation, along with the double-layer construction and draft tubes, ensure that you stay warm even in chilly environments. This sleeping bag is particularly suitable for family camping and is appreciated by both adults and kids.

The inclusion of a compression sack simplifies packing and transporting the bag, making it convenient for campers on the go. However, its weight of 5.5 pounds might be a bit heavy for backpackers looking for ultra-light gear. The bag's dimensions (80 x 33 inches) provide ample space for one person, and it can be easily stored using the integrated hang loops to maintain loft. The shell material is taffeta, which is durable but may not be as water-resistant as other synthetic options.

The dual-side zippers allow for adjustable ventilation and easy access, enhancing the usability of the sleeping bag. TETON Sports also offers a limited lifetime warranty, ensuring customer support and product reliability. Despite its excellent warmth and comfort, the bulkiness and weight of this sleeping bag may be a drawback for those seeking a more compact and lightweight option for extreme outdoor adventures.

The TETON Sports Celsius Regular 0 Degree Sleeping Bag is designed to keep you warm in a variety of weather conditions, making it an ideal choice for camping in colder climates. The sleeping bag features a soft poly-flannel lining and a spacious rectangular shape, providing a comfortable sleeping experience. The half-circle mummy-style hood is a nice addition that helps retain warmth and keeps your pillow clean. One of the standout features is its insulation, which uses SuperLoft Elite Single Channel Hollow Fiber to ensure you stay warm. The double-layer construction and draft tubes further enhance its ability to keep the cold out and the warmth in.

With a temperature rating of 0F, this bag is suitable for three-season use, although it may not be warm enough for extreme winter conditions. The included compression sack makes packing and transporting the sleeping bag easy, thanks to its heavy-duty straps that allow for ultimate compressibility. Weighing 2.3 kilograms, it is relatively lightweight for a bag of its size and warmth rating, but some may find it a bit bulky when packed. The shell material is made of taffeta, which is durable but might not be as breathable as other materials. The zipper works well and is designed to prevent snags, which is a helpful feature during setup and packing.

It offers good value for its price and has received positive customer reviews for comfort and warmth, though it may not be the best choice for ultra-light backpacking due to its weight and bulk. The TETON Sports Celsius Regular is a solid option for family camping trips and general outdoor use in cold weather.