How to Choose Sleeping Bags for Backpacking
Mountain Hardwear Bishop Pass GORE-TEX 15 Sleeping Bag - Long
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Condensation? Frost? Bring 'em on. The Mountain Hardwear Bishop Pass GORE-TEX 15°F long sleeping bag's highly water-resistant shell helps keep you cozy in the high alpine or under the stars.
Shop similar productsKey Details
Fill
650-fill-power goose down
Weight
2 lbs. 13 oz.
Compressed Volume
11.3 liters
Temperature Rating (F)
15 degrees (F)
- GORE-TEX INFINIUM™ WINDSTOPPER® shell fabric is breathable, highly water-resistant and windproof
- Weather-resistant shell helps keep the down fill dry and fully lofted inside for a warm night's sleep
- 650-fill-power goose down is fluorine-free; a high-performing warmth-to-weight ratio provides lightweight warmth and compressibility
- Down is certified to the Responsible Down Standard (RDS)
- Performance Plus Mummy cut fits close to your body for efficient warmth while offering more room to move than the standard Performance Mummy fit
- Premium lining material is soft against the skin
- Shaped draft collar and adjustable down-filled face gasket keep warm air in and cold air out
- Anatomically shaped footbox wraps your feet for comfort and warmth
- Reliable and lightweight #5 YKK 2-way zipper lets you ventilate the foot section without unzipping the entire bag; antisnag slider ensures easy entry and exit
- Full-length down draft tube prevents heat loss and cold spots along the zipper
- Glow-in-the-dark zipper pull
- Internal stash pocket; hang loops; sleeping pad loops
- Bag can be zipped to another compatible Mountain Hardwear sleeping bag with an right-side zipper to create a bed for two
- Includes a stuff sack and mesh storage bag
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View the Mountain Hardwear Bishop Pass Product LineView all Mountain Hardwear Backpacking Sleeping BagsEach bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 15 degrees (F) - ISO |
| Tested Comfort | 26 degrees (F) - ISO |
| Temperature Rating (F) | 15 degrees (F) |
| Temperature Rating (C) | -9 degrees (C) |
| Weight | 2 lbs. 13 oz. |
| Shell | Nylon with GORE-TEX INFINIUM WINDSTOPPER membrane |
| Zipper Location | Left |
| Insulation Type | Down |
| Fill | 650-fill-power goose down |
| Fill Weight | 1 lb. 7 oz. |
| Sleeping Capacity | 1-person |
| Lining | 30-denier plain-weave nylon |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | 78 inches |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | 56 inches |
| Stuff Sack Size | 8 x 15.5 inches |
| Stuff Sack Volume | 12.25 liters |
| Compressed Volume | 11.3 liters |
| Gender | Unisex |
| Sustainability | Down certified to the Responsible Down Standard (RDS) |
Buying Advice
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Dhillon
San Jose, CA
Very warm and lite sleeping bag
10 months ago
I bought this bag 4 weeks ago and wanted to try it out. I camped at May lake "9300 feet elevation" inYosemite. It snowed a day before so the temp at night dipped down to 12 - 15F, I thought I made a mistake not bringing my 0F 800 goose filled sleeping bag, but this bag lived up to its temp rating, I was comfortable and warm all night in my shirt, no extra layer needed. My toes warmed up in 10 minutes. I was able to move from side to side easily because it is a long size and felt no draft. I am very happy with my purchase.
Age:65–74
Yes , I recommend this product
Rider51
Oregon
Outstanding bag, for the right conditions.
1 year ago
I own several sleeping bags, and have worked in the outdoor industry. My belief is most people shopping for a sleeping bag to be used in cold, wet weather, are likely going to be fine with the regular Bishop Pass, a terrific bag in it's own right, and not need Gore Tex. This bag is best used in very damp conditions. Be that a backpack in the Olympic Rainforest, or perhaps at altitude when the temperature hovers around freezing but there is high humidity, and dew and frost from condensation cover almost everything (this happens in mountaineering a fair amount). Or if you love sleeping cowboy style, or under a tarp. If you use a tent, that is going to do the trick for the majority of people reading this. Another factor to know is there are sleeping bags that are treated down, and/or a treated shell. In fact, one can buy a regular Bishop Pass, buy Nikwax Down Proof, and treat it yourself in a good, front-loading washing machine. This will make the bag somewhat hydrophobic, allowing moisture from condensation to bead right off the bag, or help the down keep from clumping even in high humidity situations. A few other key elements to clear up. While this is GoreTex Infinium (Windstopper) it is still 99% waterproof, almost exactly like regular GoreTex. It has a very effective membrane to keep water out. The seams are not taped, but the bag is effectively waterproof. While it is GoreTex, the fear that it will not breathe and you will overheat is mostly unfounded. Unless you are doing pushups in your sleep. It breathes plenty well. There is another misnomer that the bag is not as soft as other bags, this too is false. It actually feels quite nice, subtly brushed ripstop nylon. The cons? It's slightly more heavy than a regular Bishop Pass. In fact, you can find a quality 0 degree down bag that weighs less than this, for the same cost. It also does not compress as well, or small as a similar bag that is not GoreTex. It does however come with a compression sack.
Yes , I recommend this product
Originally posted on mountainhardwear.com
Steven
Portland Oregon
The product description is misleading to consumers
1 year ago
The main reason I purchased this sleeping bag was REI's description of the product. One reason is that it is filled with goose down, and another reason is that its outer fabric is Goretex. However, I was very disappointed to find out that the sleeping bag actually uses duck down filling, which has a significant difference in warmth performance. I hope REI corrects the description of this product promptly, as it is highly misleading to consumers.
Age:35–44
No, I do not recommend this product
Erik
Portland Oregon and Central Oregon
Needed a bag for colder weather
1 year ago
So far so good. Have only slept in the bag during 37 degree weather so not it’s limit but was toasty and dry!
Age:45–54
Yes , I recommend this product
Steven4
The product description is misleading to consumers
1 year ago
The main reason I purchased this sleeping bag was REI's description of the product. One reason is that it is filled with goose down, and another reason is that its outer fabric is Goretex. However, I was very disappointed to find out that the sleeping bag actually uses duck down filling, which has a significant difference in warmth performance. I hope REI corrects the description of this product promptly, as it is highly misleading to consumers.