10 Best Hiking Sleeping Bags 2025 in the United States

The TETON Sports Outfitter -35 Degree Sleeping Bag is designed for those who need serious warmth in extremely cold conditions, with a temperature rating down to -35°F. It uses SuperLoft Elite hollow fiber insulation in a double-layer design to trap heat effectively, making it suitable for winter camping, hunting, or any cold weather adventure. The sleeping bag has a rugged canvas shell that’s water-resistant and built to last through many trips, paired with a soft cotton flannel liner for comfort. Its rectangular shape offers plenty of room and is great for people who prefer extra space to move around while sleeping.

This construction comes with a trade-off in weight and packability—it weighs about 20 pounds and is bulkier than many modern lightweight sleeping bags, so it’s best suited for car camping or situations where carrying heavy gear is not a concern. The zipper is sturdy and placed on the right side, providing ease of use and durability. While the bag is compressible to an extent, it won’t pack down as small as lighter synthetic or down bags. For those who prioritize durability, warmth, and comfort over ultralight portability, this sleeping bag offers a solid choice with tough materials and a lifetime warranty that adds confidence for long-term use, although those looking for lightweight, highly packable options might want to consider other models.

The Kelty Cosmic 20 Down Mummy Sleeping Bag is a reliable choice for backpackers and campers who need a balance of comfort and sustainability. Rated for 20 degrees, it provides ample warmth for three-season use, thanks to its 550 fill power down insulation. The mummy shape offers a snug fit, helping to retain body heat, making it suitable for colder nights.

Weighing around 2 lbs. 6 oz., the sleeping bag is lightweight and compressible, easily fitting into a stuff sack for convenient packing. The recycled nylon and polyester taffeta shell with PFAS-free durable water repellent adds an eco-friendly touch, making it a great option for those conscious about their environmental impact. The dual-direction zippers allow for easy access and ventilation, enhancing user comfort.

Some users might find the bag a bit tight, especially if they prefer more room to move around. Additionally, while the 550 fill power down is effective, it might not be as lofty or insulating as higher fill power options available in the market. This sleeping bag is ideal for campers and backpackers who prioritize sustainability and decent performance without breaking the bank.

The TETON Sports Mammoth Queen Size Double Sleeping Bag is a great choice if you want extra space and comfort while camping, especially for car camping or basecamp use. Its rectangular shape and roomy queen size mean you can stretch out easily, which is rare in many sleeping bags. The soft poly-flannel lining adds a cozy feel, making it comfortable to sleep in. With a temperature rating of 20°F, it’s suitable for 3-season camping, keeping you warm in cool to moderately cold weather. The insulation is polyester, which holds warmth well and dries faster than down if it gets damp. The tough canvas shell stands out for durability and water resistance, so it can handle rough use and some wet conditions better than many nylon-shell bags. It also features full-length draft baffles to prevent cold air from sneaking in through the zipper, helping maintain warmth throughout the night.

This bag is quite heavy at nearly 17 pounds and is not the most packable option, making it less ideal for backpacking or hiking where weight and space matter. The zipper is reliable but the rectangular shape and bulkier design mean it takes up more room in your pack. This sleeping bag is best suited for campers who prioritize comfort and durability over lightness, such as those car camping, hunting, or camping at a basecamp. If you want a roomy, warm, and tough sleeping bag and don’t mind carrying extra weight, this TETON Sports Mammoth delivers well on those fronts.