Kelty Mistral 40 vs TETON Sports Altos Down 0°F
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- Side-by-side analysis based on real user feedback
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| Mistral 40 | Altos Down 0°F | |
|---|---|---|
![]() | ![]() VS | |
| Fill Type | CloudLoft synthetic | MtnDry down |
| Weight | 44 oz | 72 oz |
| Size | Regular: 76 in long | 84 × 33 in |
| Shell Material | 190T polyester taffeta | Nylon |
| Compression Sack | Included | Included; 15.5 × 9.5 × 9.5 in packed |
| Warranty | Limited lifetime | Limited lifetime |
| Lining Material | 190T polyester taffeta | 20D 380T nylon |
| Baffle Construction | Offset quilted | Not specified |
| Color | Green | Black |
| Draft Tubes | Draft-locked zipper | Full-length zipper draft tube |
| Fill Power | Not applicable - synthetic fill | Not specified |
| Foot Box | Natural-fit spacious footbox | Mummy |
| Kelty Mistral 40 | TETON Sports Altos Down 0°F |
|---|---|
![]() | ![]() |
| Fill Type | |
CloudLoft synthetic | MtnDry down |
| Weight | |
44 oz | 72 oz |
| Size | |
Regular: 76 in long | 84 × 33 in |
| Shell Material | |
190T polyester taffeta | Nylon |
| Compression Sack | |
Included | Included; 15.5 × 9.5 × 9.5 in packed |
| Warranty | |
Limited lifetime | Limited lifetime |
| Lining Material | |
190T polyester taffeta | 20D 380T nylon |
| Baffle Construction | |
Offset quilted | Not specified |
| Color | |
Green | Black |
| Draft Tubes | |
Draft-locked zipper | Full-length zipper draft tube |
| Fill Power | |
Not applicable - synthetic fill | Not specified |
| Foot Box | |
Natural-fit spacious footbox | Mummy |
Comfort
Mistral 40
Altos Down 0°F
Comfort is a crucial factor when selecting a sleeping bag, as it directly impacts the quality of your rest. A comfortable sleeping bag can make the difference between a restful night and a tossing, turning experience. The Kelty Mistral 40 shines in this category with its spacious natural fit foot box, full hooded draft tube, and women's specific cut, all contributing to a cozy and comfortable sleep environment. Users consistently praise its comfort and comfort hood, making it a top choice for those who prioritize a good night's sleep. In contrast, the TETON Sports Altos Down 0°F receives mixed reviews on comfort. While some users find it cozy and warm, others report issues with fit and feel, indicating that it may not be the best choice for those who prioritize comfort above all else.
Durability
Mistral 40
Altos Down 0°F
Durability is essential for a sleeping bag, especially if you plan to use it frequently or in rugged conditions. A durable sleeping bag can withstand the wear and tear of outdoor adventures, ensuring it lasts for many trips to come. The TETON Sports Altos Down 0°F excels in this category with its durable material and construction, making it a reliable option for outdoor activities. Users praise its sturdy build, which can handle various conditions. The Kelty Mistral 40, while also durable, has fewer mentions of its durability, indicating that it might not be as robust as the Altos Down 0°F.
Warmth
Mistral 40
Altos Down 0°F
Warmth is a key consideration for any sleeping bag, as it determines how well the bag can keep you warm in cold conditions. A warm sleeping bag is crucial for a comfortable night's sleep, especially in chilly environments. The Kelty Mistral 40 is highly praised for its warmth, with users noting its ability to keep them warm in temperatures as low as 20° Fahrenheit. Its cozy CloudLoft synthetic insulation and offset quilt construction help prevent cold spots, making it an excellent choice for cold weather. The TETON Sports Altos Down 0°F also receives positive feedback on its warmth and insulation, but some users report it may not be sufficient for extremely cold conditions, making the Mistral 40 a better option for those seeking reliable warmth.
Packability
Mistral 40
Altos Down 0°F
Packability is important for those who need to carry their sleeping bag on long hikes or backpacking trips. A packable sleeping bag can be easily compressed and carried, saving valuable space in your backpack. The TETON Sports Altos Down 0°F excels in this category with its lightweight design and compact stuff sack, making it easy to transport. Users appreciate its packability, which is crucial for multi-day trips. The Kelty Mistral 40 also offers good packability with its included compression sack, but it is slightly heavier, making the Altos Down 0°F a better choice for those prioritizing easy transport.
Ease Of Use
Mistral 40
Altos Down 0°F
Ease of use is an important factor, especially for those who want a hassle-free experience when setting up their sleeping bag. A user-friendly sleeping bag can save time and effort, allowing you to focus on enjoying your outdoor adventure. The Kelty Mistral 40 is praised for its non-snag zipper and dual slide snag-free locking zippers, making it easy to use. Users find it convenient and hassle-free, which is a significant advantage for those who value ease of use. The TETON Sports Altos Down 0°F, on the other hand, has mixed reviews on ease of use, with some users finding the zipper and drawstrings easy to use while others report difficulties, making the Mistral 40 a better choice for those seeking a user-friendly option.
Versatility
Mistral 40
Altos Down 0°F
Versatility is important for those who need a sleeping bag that can adapt to different conditions and preferences. A versatile sleeping bag can be used in various environments and seasons, making it a valuable investment. Both the Kelty Mistral 40 and the TETON Sports Altos Down 0°F offer good versatility, but in different ways. The Mistral 40 provides dual slide snag-free locking zippers for venting versatility and is suitable for summer, spring, and autumn. The Altos Down 0°F offers various size and color options, making it adaptable to different needs and preferences. This category is a tie, as both sleeping bags offer unique versatility features that cater to different user needs.
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- Data-driven rankings from real user reviews
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Conclusion & Final Verdict:
In conclusion, the Kelty Mistral 40 is the better choice for those prioritizing comfort and warmth. Its spacious design, excellent insulation, and user-friendly features make it ideal for a cozy night's sleep in various conditions. On the other hand, the TETON Sports Altos Down 0°F is suited for those who need a durable and packable sleeping bag for rugged outdoor adventures. While it may not be as comfortable, its robust build and lightweight design make it a reliable option for frequent travelers and backpackers.
Related Comparisons
Kelty Mistral 40vsKelty Cosmic Down 20
The Kelty Mistral 40 offers superior comfort and ease of use with its spacious design and snag-free zippers, while the Kelty Cosmic Down 20 provides better durability and warmth. Choose the Mistral 40 for comfort and versatility, or the Cosmic Down 20 for durability and warmth.
Kelty Mistral 40vsMarmot Trestles Elite Eco 20° Long
The Kelty Mistral 40 excels in packability and ease of use with its lightweight design and snag-free zippers, while the Marmot Trestles Elite Eco 20° Long offers superior warmth and durability. Choose the Mistral 40 for backpacking and the Trestles Elite Eco for car camping.
Kelty Mistral 40vsOneTigris Trailnap
The Kelty Mistral 40 offers superior comfort and packability with its lightweight design and compression sack, making it ideal for backpackers. The OneTigris Trailnap, while heavier, excels in versatility for various outdoor activities.
Kelty Mistral 40vsREI Co-op Siesta Hooded 20 Sleeping Bag
The Kelty Mistral 40 offers superior warmth and comfort with its CloudLoft synthetic insulation and spacious footbox, making it ideal for colder conditions. The REI Co-op Siesta Hooded 20, while versatile as a blanket, falls short in warmth and packability.
Kelty Mistral 40vsSierra Designs Frontcountry Bed 20
The Kelty Mistral 40 offers superior warmth and comfort, ideal for colder conditions, while the Sierra Designs Frontcountry Bed 20 excels in packability and stability, better suited for milder weather.
Kelty Mistral 40vsTETON Sports Celsius
The Kelty Mistral 40 excels in comfort and packability, making it ideal for backpackers, while the TETON Sports Celsius offers superior warmth for cold weather camping. Choose Mistral 40 for versatility and ease of use, or Celsius for cozy, cold-weather comfort.

