10 Best 0 Degree Down Sleeping Bag 2025 in the United States

The HiZYNICE 0 Degree Sleeping Bag offers a solid option for winter camping and cold weather, with a temperature rating that ensures warmth in extreme conditions. It features a soft 100% cotton flannel lining for comfort and anti-snag zippers that are easy to operate, making it user-friendly. The bag is quite spacious, accommodating campers up to 6 feet 7 inches tall, and is wide enough for side sleepers or those who prefer more room. The draft tube along the zipper is a handy feature to prevent heat loss, which is crucial in cold weather.

The weight of the bag (7 pounds) makes it less ideal for backpacking where lighter options would be preferred. The rectangular shape might not be as thermally efficient as mummy-shaped bags, but it does offer more space and comfort. The outer material is a sturdy waterproof polyester, which is great for durability and keeping dry, but it may not be as breathable as other fabrics. Additionally, the inclusion of a compression sack is a plus, making it easier to pack and transport.

The ability to zip two bags together to form a double sleeping bag or fully open it to use as a mat adds versatility. This sleeping bag is best suited for car camping, short hikes, or situations where weight is less of a concern. Machine washability is a convenient feature, but care should be taken to protect the waterproof coating.

The QEZER 0 Degree Sleeping Bag is designed to keep you warm in extremely cold conditions with its 600 fill power duck down and additional cotton insulation at the chest. It has a temperature rating going down to -11°F, making it a suitable option for winter camping. The mummy shape helps retain heat efficiently, while the trapezoidal bottom offers more room for your feet compared to standard mummy bags.

At 4.63 lbs, it's relatively lightweight and comes with a compact compression sack for easy transportation, although it may need some time to fluff up after being compressed. The shell is made of durable 400T 20D nylon, which is tear-resistant and offers good waterproof and windproof performance. The sleeping bag features a dual zipper system that can be used to connect two bags together, making it versatile for couples.

Some users may find the 600 fill power slightly less insulating compared to higher fill power options. Additionally, while the bag is rated for all seasons, its bulkiness might be a drawback for lightweight backpacking. It’s a solid choice for those needing a warm, durable sleeping bag for cold weather adventures.

The TETON Sports Celsius Regular 0 Degree Sleeping Bag is designed to keep campers warm and comfortable in various weather conditions. It features innovative fiber fill, double-layer construction, and draft tubes to prevent heat loss and ensure warmth. The soft poly-flannel lining and spacious rectangular shape provide a cozy sleeping experience.

The mummy-style hood helps maintain warmth and cleanliness for your pillow, enhancing sleep comfort. The durable taffeta shell material ensures durability and longevity, making it suitable for rugged outdoor use. Packing is simplified with the included compression sack, allowing easy storage without the need to roll up the bag.

Weighing 2.3 kilograms, it is reasonably lightweight for a 0-degree sleeping bag, though not the lightest option available. The bag measures 80 x 33 inches, accommodating users up to 6.67 feet in height. The zipper features and draft collar further contribute to its effectiveness in retaining heat. The TETON Sports Celsius Regular offers good value for those prioritizing comfort, durability, and ease of packing in their camping gear.