Kelty Cosmic Down 20 Sleeping Bag vs Mountain Hardwear Bishop Pass 15 Sleeping Bag
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| Cosmic Down 20 Sleeping Bag | Mountain Hardwear Bishop Pass 15 Sleeping Bag | |
|---|---|---|
![]() | ![]() VS | |
| Weight | Short: 35 oz Regular: 43 oz Long: 47 oz | Regular: 2 lb 5.4 oz / 1060 g |
| Fill Power | 550 | 650 |
| Packed Size | Short: 1029 cu in Regular: 1352 cu in Long: 1512 cu in | Stuffed: 15.5 x 8 in / 39 x 20.25 cm; compressed volume Regular: 494 in³ / 8.1 L |
| Shell Material | Recycled 20D Nylon Taffeta | 20D ripstop nylon, DWR finish |
| Fits Up To Height | Short: 72 in Regular: 78 in Long: 84 in | Regular: 72 in / 183 cm; Long: 78 in / 198 cm |
| Warranty | Lifetime | Limited lifetime warranty for practical life of product |
| Zipper Type | Quad-stitch anti-snag | Two-way zipper with draft guard |
| Down Treatment | DriDown | Fluorine-free |
| Baffle Construction | Trapezoidal | Full-length down draft tube; manufacturer does not list a separate baffle construction spec |
| Foot Box Shape | Expanded, natural fit | Contoured |
| Hood Type | Insulated, adjustable | Performance Plus Mummy cut with shaped draft collar and adjustable down-filled face gasket |
| Water Resistance | PFAS-free DWR | DWR finish |
| Draft Collar | Full draft tube and collar | Shaped draft collar with adjustable down-filled face gasket |
| Temperature Rating | 20°F | 15°F / -9°C |
| Kelty Cosmic Down 20 Sleeping Bag | Mountain Hardwear Bishop Pass 15 Sleeping Bag |
|---|---|
![]() | ![]() |
| Weight | |
Short: 35 oz Regular: 43 oz Long: 47 oz | Regular: 2 lb 5.4 oz / 1060 g |
| Fill Power | |
550 | 650 |
| Packed Size | |
Short: 1029 cu in Regular: 1352 cu in Long: 1512 cu in | Stuffed: 15.5 x 8 in / 39 x 20.25 cm; compressed volume Regular: 494 in³ / 8.1 L |
| Shell Material | |
Recycled 20D Nylon Taffeta | 20D ripstop nylon, DWR finish |
| Fits Up To Height | |
Short: 72 in Regular: 78 in Long: 84 in | Regular: 72 in / 183 cm; Long: 78 in / 198 cm |
| Warranty | |
Lifetime | Limited lifetime warranty for practical life of product |
| Zipper Type | |
Quad-stitch anti-snag | Two-way zipper with draft guard |
| Down Treatment | |
DriDown | Fluorine-free |
| Baffle Construction | |
Trapezoidal | Full-length down draft tube; manufacturer does not list a separate baffle construction spec |
| Foot Box Shape | |
Expanded, natural fit | Contoured |
| Hood Type | |
Insulated, adjustable | Performance Plus Mummy cut with shaped draft collar and adjustable down-filled face gasket |
| Water Resistance | |
PFAS-free DWR | DWR finish |
| Draft Collar | |
Full draft tube and collar | Shaped draft collar with adjustable down-filled face gasket |
| Temperature Rating | |
20°F | 15°F / -9°C |
Comfort
Cosmic Down 20 Sleeping Bag
Mountain Hardwear Bishop Pass 15 Sleeping Bag
Comfort is crucial for a good night's sleep, especially after a long day of backpacking. A comfortable sleeping bag can make a significant difference in your overall outdoor experience. The Kelty Cosmic Down 20 offers a cozy and roomy fit, with many users appreciating the comfortable design and ample leg room. However, some may find the shoulder area a bit tight. On the other hand, the Mountain Hardwear Bishop Pass provides a cozy fit that side sleepers appreciate, with features like a draft collar for temperature regulation, though some may find it slightly restrictive. Overall, the Cosmic Down 20 edges out the Bishop Pass in comfort due to its higher rating and more positive user feedback.
Warmth
Cosmic Down 20 Sleeping Bag
Mountain Hardwear Bishop Pass 15 Sleeping Bag
Warmth is a critical factor for backpacking sleeping bags, as it directly impacts your comfort and safety in cold conditions. The Kelty Cosmic Down 20 is highly praised for its warmth, keeping users comfortable in cold conditions down to 30 degrees. It has a higher warmth rating and more positive user feedback compared to the Bishop Pass. The Mountain Hardwear Bishop Pass, with a 15°F rating and an extra layer of down, retains heat well in cold conditions, though a few users found it too warm for milder nights. The Cosmic Down 20's superior warmth makes it the better choice for colder environments.
Durability
Cosmic Down 20 Sleeping Bag
Mountain Hardwear Bishop Pass 15 Sleeping Bag
Durability ensures that your sleeping bag can withstand the rigors of the trail and last for many trips. The Kelty Cosmic Down 20 is noted for its high-quality materials and construction, ensuring long-lasting durability. It has a higher durability rating and more positive user feedback. The Mountain Hardwear Bishop Pass also offers strong abrasion resistance with its 20D nylon shell and DWR coating, along with a snag-free zipper. However, the Cosmic Down 20's superior durability rating makes it the more reliable choice for long-term use.
Packability
Cosmic Down 20 Sleeping Bag
Mountain Hardwear Bishop Pass 15 Sleeping Bag
Packability is important for backpackers who need to save space and weight in their packs. The Kelty Cosmic Down 20 is appreciated for its lightweight and compact design, making it easy to pack and carry on backpacking trips. It has a higher packability rating and more positive user feedback. The Mountain Hardwear Bishop Pass compresses down to a compact size for easy packing, though it may not be as small as some 30°F bags. The Cosmic Down 20's superior packability makes it the better choice for those prioritizing space and weight savings.
Versatility
Cosmic Down 20 Sleeping Bag
Mountain Hardwear Bishop Pass 15 Sleeping Bag
Versatility allows a sleeping bag to adapt to varying conditions, making it suitable for a range of environments. The Mountain Hardwear Bishop Pass adapts well to varying conditions with vented gills and the ability to unzip fully, making it a great choice for technical users. It has a higher versatility rating and more positive user feedback. The Kelty Cosmic Down 20's versatility is less documented, with buyer feedback not providing enough detail to treat it as a standout benefit. The Bishop Pass's superior versatility makes it the better choice for those needing adaptability in different conditions.
Ease Of Use
Cosmic Down 20 Sleeping Bag
Mountain Hardwear Bishop Pass 15 Sleeping Bag
Ease of use ensures that you can quickly and conveniently set up and adjust your sleeping bag. The Kelty Cosmic Down 20 is found easy to use, with features like a two-way zipper and velcro closure enhancing convenience. It has a higher ease of use rating and more positive user feedback. The Mountain Hardwear Bishop Pass's two-way zipper and venting options make adjustments easy, though some users found it less intuitive to use. The Cosmic Down 20's superior ease of use makes it the better choice for those prioritizing convenience.
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- Data-driven rankings from real user reviews
- Affiliate partnerships don't influence our methodology
We may earn commission from links.
Conclusion & Final Verdict:
After comparing the Kelty Cosmic Down 20 and the Mountain Hardwear Bishop Pass 15, it's clear that both sleeping bags have their strengths. The Kelty Cosmic Down 20 excels in comfort, warmth, durability, packability, and ease of use, making it a great choice for those prioritizing these features. On the other hand, the Mountain Hardwear Bishop Pass 15 stands out in versatility and has a slightly better temperature rating, making it suitable for a range of conditions.
Choose the Kelty Cosmic Down 20 if you need a warm, durable, and comfortable sleeping bag that packs down small. Opt for the Mountain Hardwear Bishop Pass 15 if you need a versatile sleeping bag that can adapt to varying conditions.
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