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Last updated January 1st, 2020
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The Western Mountaineering MityLite Sleeping Bag is a lightweight down sleeping bag for summertime adventures. A quick weekend camp trip or traveling from country to country, the 1 lb, 10 oz bag stuffs down into a 6" x 12" stuff sack, so you can jam it into your luggage or backpack and forget about it until it's time to rest. The semi-rectangular shape provides plenty of room to roll over, without a hood to get tangled up around your head. It even unzips so you can use it as a blanket! Stuffed with all the down insulation you'll need for a comfortable nights sleep at 40°F, you'll be super pumped you thought to pack it along.
FEATURES of the Western Mountaineering MityLite Sleeping Bag
Sewnthru semi-rectangular bag can be zipped to the Summer Coupler to sleep two
It also can opened up to act as a lightweight comforter
At 1 lb 10 oz and with the .9 ounce ripstop shell this bag folds away into nothing for an easy carry
Stuff it into your carry-on luggage, or fold it into your wallet, you can carry it wherever you go
Stuff / Compression Sack Dimensions:
6 x 12 in.
Draft Collar, Made in USA
Camping, Ultralight Backpacking, Backpacking
Exact Temperature Rating:
40 Degrees Fahrenheit
Sleeping Bag Shape:
Fill Weight (Regular):
Max User Height (Regular):
6 ft 3 in.
Foot Circumference (Short):
Hip Circumference (Regular):
Shoulder Circumference (Long):
We only ship this brand to US Addresses.
31 - 40 Degrees Fahrenheit
850+ Fill Down
Rated 5 out of
Great bag for hut tripsI bought this bag for a four night hut trip knowing it would be a summer trip bag too. I have a 20° Marmot semi rectangular bag that I've used in the past but it was warmer than necessary and bulky in the pack. The MityLite was warm enough to sleep in boxers and my Patagonia Capilene lightweight base layer. I would guess the bunk room got down to 45-50°F at night. A fleece layer or socks was too much for me.
The MityLite was about half the weight (better quality down+higher temp rating) and fit into a Sea-to-Summit XS Event compression dry sack, though I did eventually up-size to the small bag for ease of stuffing. My Marmot bag requires a medium and that's a tough squeeze. Anyway, I have plans to use this bag for summer backpacking, future hut trips, trekking in the French Alps, and who knows what other adventures.
Date published: 2019-02-09
Rated 5 out of
One heck of a sleeping bagI bought this for a 3 day camping trip; the weather went a but south and dipped into the thirties (this bag is 45 degree rated). Even so, with light bundling this bag kept me plenty warm, and the stitching and craftsmen ship is fantastic.
Date published: 2018-10-22
Rated 5 out of
great summer bagI've used Western Mountaineering bags for over 20 years. They are excellent quality and seem to last forever. This one is light and easy to pack, as well as comfortable and easy to move around in. I bought it to use with a coupler, so that 2 people can sleep under it, and it preforms that function well, but I also use it as my regular summer bag.
I had a mummy shaped bag that I left completely unzipped in the summer and used like a blanket. This bag has more room and the dual zippers allow enough flexibility to get ventilation, while still keeping the bag around yourself.
Date published: 2018-06-13
Rated 5 out of
Light WeightBought this for backpacking with my husband Light weight and holds our sleeping pads. Provides the right amount of warmth for early spring and fall temps.
Date published: 2018-06-04
Rated 5 out of
PerfectI bought this bag several years ago and I can't even begin to count the number of nights I have spent in/under it. I have even taken it on business trips to avoid hotel sheets. Great bag but also unzips to create an awesome quilt. I'm a warm sleeper and I'm pretty sure I've slept comfortably into the upper 30's. I'm 6'1", 250 and I do wish the bag were a little wider.
Date published: 2018-05-14
Rated 5 out of
Out on the Bruce from
Perfect Summer BagI've been dreaming of owning this bag for a long time. The fabric is very soft and quiet. This bag packs up super small and is a light weight hiker's dream bag!
Date published: 2017-12-22
Rated 5 out of
Perfect for cool weather campingA little light for winter or alpine camping but perfect for 40 or higher nights
Date published: 2017-02-06
Rated 5 out of
MityLite Sleeping BagI bought this item less than a month ago and have only slept in it 7 nights with temps ranging from 40 to 65 degrees. I am very happy with the function of the bag at those temps.
The down fluffs very quickly after being in the stuff sack so it doesn't have to be shaken out or wait for a period before using. The zipper works freely without snagging on the bag and stay zipped, I'm a restless sleeper and some bags come undone if you roll around much. Plenty of room in the bag, I'm 5ft 7 the bag I purchased is 6ft.
The first use of the bag was on a trip to Virginia the real test will be in July for a month long Motorcycle trip to up state New York.
I cannot attest to the durability of the product since I have only used it a few times.
What size summer coupler should I use with the MityLite (6FT or 6FT 6IN)? Thanks!
Asked by: Mark
I purchased a MityLite and a 6'6" summer coupler. The foot zipper on the summer coupler was 6" too long and the side zipper the same length too short. So I ordered a 6' coupler, had it delivered to the Boulder store, and took my bag to test. Guess what? Same problem, both couplers, and I showed it to a sales person at the store. Moosejaw accepted my return of the 6'6" coupler no problem but they haven't updated the MityLite page accordingly.
Unless I got an irregular MityLite, Western Mountaineering doesn't make a coupler that fits the MityLite. Western Mountaineering has been unresponsive to my e-mail inquires about this issue.
Answered by: Hiatus
Date published: 2020-09-28
Can two of these bags be zipped together for a double bag? Does the zipper go down the side and then around the bottom so if you unzipped it completely it would make a flat blanket?
Asked by: Jimbo
Hiya! Thanks for the question! Yes, you can zip two of these together to make a double bag. It can also be unzipped to make a comforter. Hope this helps!