How to Choose Sleeping Bags for Backpacking
Mountain Hardwear HyperLamina Spark Sleeping Bag
This product is not available.
Winner of Backpacker magazine's 2015 Editors' Choice Award, this bag offers outstanding compressibility and excellent loft and warmth with zoned insulation and a half-length zipper to save weight.
Shop similar productsKey Details
Fill
Thermal.Q synthetic fibers
Temperature Rating (F)
32 degrees (F)
- Backpacker magazine conducts rigorous field testing to select award winners in recognition of their innovation in design, materials and performance
- Proprietary welded Lamina construction enhances loft and eliminates cold spots; zoned insulation maximizes warmth where it's needed most
- Thermal.Q insulation has outstanding compressibility and maintains excellent loft and warmth, even when damp
- Performance mummy cut is snug, reducing girth, weight and bulk while maximizing thermal efficiency
- Comfort footbox follows natural foot position for maximum warmth and comfort
- Face gasket and tailored hood comfortably block drafts at the hood opening and seal in warmth
- Single #5 half-length center zip with dual sliders minimizes weight and allows for ventilation
- Ultralight shell is soft and highly wind-resistant
- Silnylon compression stuff sack and mesh storage sack included
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 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 | 32 degrees (F) - EN |
| Tested Comfort | 41 degrees (F) - EN |
| Temperature Rating (F) | 32 degrees (F) |
| Temperature Rating (C) | 0 degrees (C) |
| Shell | Tactel nylon |
| Zipper Location | Front |
| Insulation Type | Synthetic |
| Fill | Thermal.Q synthetic fibers |
| Lining | 20-denier taffeta |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 6 x 12 inches |
| Stuff Sack Volume | 5.6 liters |
| Compressed Volume | Unavailable |
| Gender | Unisex |
Buying Advice
Review this Product
Adding a review will require a valid email for verification
Most Helpful Favorable Review
best synthetic bag I've ever used
OokGoHiking10 years ago
Picked this up just in time for a short expedition into Snow Mountain Wilderness, and this bag performed amazingly well. Even though it's only rated to 32, I was warm enough to where I had to unzip my puffy at just below freezing, and with an added reflective bivy bag around it this bag saved my butt when we got caught in a snowstorm and the temperature plummeted. The fact that it's lighter and more packable than any synthetic I've ever used is just gravy. It's now my precious.
OokGoHiking
Sacramento, CA, United States
41 people found this review helpful
Most Helpful Critical Review
Love it and Hate it
KCMil9 years ago
I love that this is a super warm bag and the lightest in all the synthetics I have found. I love how light and packable this bag is. The front zipper was a little strange to get used to but a rather great feature for side sleepers. There is only one deal breaker for me and is the reason why I am returning it... The zipper only goes down to the torso and no zipper at the foot box which means if you get hot and need to stick your feet out you have to literally climb half out of the bag. The next lightest bag, in a synthetic, with a similar temp rating, is a full pound heavier. I marked Yes for recommending the product but only if you don't mind the confinement.
KCMil
Seattle, WA, United States
27 people found this review helpful
Customer Images
KCMil
Seattle, WA, United States
Love it and Hate it
9 years ago
I love that this is a super warm bag and the lightest in all the synthetics I have found. I love how light and packable this bag is. The front zipper was a little strange to get used to but a rather great feature for side sleepers. There is only one deal breaker for me and is the reason why I am returning it... The zipper only goes down to the torso and no zipper at the foot box which means if you get hot and need to stick your feet out you have to literally climb half out of the bag. The next lightest bag, in a synthetic, with a similar temp rating, is a full pound heavier. I marked Yes for recommending the product but only if you don't mind the confinement.
Yes , I recommend this product
John in WA
Mukilteo WA
Incredibly compact and light weight
10 years ago
I bought this to use as a summer mountaineering bag to go in my ultra-light kit. I wanted to go with synthetic for those situations where foul weather leaves you looking like a drowned rat by the time you get your bivy / tent set up. I also have a single wall tent so water getting on the bag from condensation was a concern, hence I was wary of using down. This bag comes with a compression sack, which when used will make it crazy compact. I think it has to be the most compact bag (down or synthetic) I have ever seen for this temp range. Also incredibly light as you can see from its specs. So far I have taken this on an overnight trip where we camped just below the summit of Eldorado Peak in the North Cascades. Temps that night were in the mid 30's, and I woke up sweating. This thing will keep you pretty toasty in the temp range it specifies. I think if you wanted to wear a puff or fleece layer you could use the bag in much colder temps. Got some water on it from condensation near the bottom of my tent walls, and couldn't tell any difference in comfort. This is a nice change from having to worry about it as I do with my down bag (I do love my down bag for really cold freezing weather). Its a minimalist light weight bag, so doesn't have a fancy draft collar and the zipper only goes part way down the bag. I see all these as positives, and if you are using it for its intended purpose, you will too. I am 5'-10" but bought the long because I sleep with my arm above my head and like to tuck it into the hood. As mummy bags go, it rates pretty well in terms of not being too constricting. All around very comfy.
Yes , I recommend this product
O'Man
San Diego, CA
Warm, Comfortable and Light
9 years ago
Just returned from the Gila Wilderness in New Mexico and the Spark Sleeping Bag performed admirably. Night time temps dipped into the low 30's the first two nights. With a light base layer, I stayed warm with no cold spots. The generous hood was easy to pull tight. Temps warmed to the mid-40's as the trip continued, and the half zipper opening allowed for plenty of ventilation. Getting in and out of the bag was a little more cumbersome than a full zippered bag, but not really an issue. The zipper did snag on occasion. For the weight and warmth, this is an excellent Summer bag.
OokGoHiking
Sacramento, CA, United States
best synthetic bag I've ever used
10 years ago
Picked this up just in time for a short expedition into Snow Mountain Wilderness, and this bag performed amazingly well. Even though it's only rated to 32, I was warm enough to where I had to unzip my puffy at just below freezing, and with an added reflective bivy bag around it this bag saved my butt when we got caught in a snowstorm and the temperature plummeted. The fact that it's lighter and more packable than any synthetic I've ever used is just gravy. It's now my precious.
Yes , I recommend this product
H-H
Love this bag so far!
9 years ago
As weather is a fickle thing, I woke up the morning after my second night sleeping in this bag to find the temperature had dropped to 19 degrees F. I slept wearing a warm baselayer and warm tights and was comfortable enough that I had no idea it was that much below freezing. It's a really sweet bag for those of us who pack light but refuse to use animal products.
nickabuja
jacksonville, nc
performed perfectly
8 years ago
I bought this about a year ago and I finally got to test it out this weekend on a two night trip. first of all let me just say that this bag is definitely worth every cent. I'm 5'11" 200 lbs and it fits me perfectly. I was a little concerned with the temp however when the Temps got down to 34 it was still plenty warm. I can't wait to test this bag to its true limits because I believe it can go a lot further than its rated for. the only thing that I wish about this bag was that the zipper was about 2" longer, it's a little hard getting out in my tent. I would highly recommend this to anyone
Yes , I recommend this product
Topher71
Moab, UT
Great light synthetic bag for the money!
6 years ago
I’ve used this bag extensively in Utah, Colorado, on Mount Baker, the Wind River Range, and in the Bugaboos. I’m 5’10”/178cm and the regular fits me well. The bag is actually quite roomy and comfortable. For a synthetic bag it is fairly light and packable. Good to about 35F/2C. A down bag would save weight and pack smaller, but not only will it cost you more money, it will be more fragile and susceptible to moisture issues. The center zip is nice for us side sleepers, but makes it awkward to use unzipped as a quilt in warmer temps (the hood is in your face). Great choice for moderate temps in wetter climates!
Yes , I recommend this product
Originally posted on mountainhardwear.com
Yida
Honolulu, HI
Works in Iceland and Hawaii
9 years ago
I got this bag because of it's small size and it's heat retention when I was traveling through Iceland. The bag kept up to Iceland fall/winter conditions slight above 30F and I love that it comes with a compression bag and a regular bag. This bag has also seen some duty in 60-70 degree camping in hawaii although I only used it as a blanket there because it traps heat too well
monderno
Montana
Surprisingly Warm
9 years ago
I do most of my backpacking in the mountains of Montana, where even in the summer it's not uncommon for nighttime temperatures to dip into the 30's. So for me, the HyperLamina Spark 35 is a late spring, summer, and early fall bag. Temperature ratings on bags are a complete crapshoot in my experience, but the 41 F comfort rating on this bag I think is pretty accurate. It compresses down almost as well as a comparable down bag, and it's almost as lightweight as a down bag, meaning you truly do get almost all of the benefits of both worlds, synthetic and down. Highly recommended.
Yes , I recommend this product
Originally posted on mountainhardwear.com
Godzilla1916
Coos Bay, Oregon
Best 3 Season Bag I Ever Used
9 years ago
I've had a great year this season getting out and about, part of my experience was in replacing all my old gear to light weight and ultralight equipment. The MH Hyper Lamina Long was without a doubt one of my favorite purchases this season. For the highlight of my year I spent 10 days in the Wrangell St Elias NP on the 7 pass route in August where in I brought this bag; never once during the rain, sun or glacier fog did I regret my decision to purchase this bag before my trip. I love the compress ability of the bag, and although I found mine to be slightly heavier than advertised I am happy with the 2lb weight (with stuff sac) for the value I receive. The materials are spot on, and even with the wet rainy conditions I faced at the start and end of my trip, I never was in fear of getting this bag a little bit wet as I would with a down bag. This bag takes up half the space of my old 3 season synthetic bag and weighs a 1/2 lb lighter and allows for more room in my lightweight pack set up. Again, I thought this bag lives up to all the hype and is a solid investment.
Yes , I recommend this product
Originally posted on mountainhardwear.com
1 - 10 of 38 Reviews