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Not just lite; MegaLite.

Western Mountaineering gave the MegaLite Sleeping Bag a roomy cut for those who want an ultralight bag without the coffin-like feeling. This down bag features insanely lightweight 850-fill goose down and will lull you to sleep on your warm summer backpacking trips and multi-day bike excursions. The bag's continuous baffle system let you sweep the down to the top or bottom of the bag to suit the night's temps, and the full-length draft tube keeps the chills from sneaking in.
  • Ultra-premium, 850-fill down insulation to retain your body’s warmth and maintain a super-high warmth-to-weight ratio
  • Ultra breathable, packable, high-thread-count ExtremeLite shell fabric encases the insulation without adding unnecessary weight
  • Water-resistant coating protects the down insulation from frost, condensation, and spin drift
  • Continuous baffle system ensures unimpeded loft and and zero cold spots
  • Slightly wider shoulder and waist circumferences ensure a comfortable night sleep
  • Full-length, #5 YKK coil zipper stands up to years of use
  • Western Mountaineering bags are made in the USA

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Western Mountaineering MegaLite Sleeping Bag: 30 Degree Down

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Here's what others have to say...

5 5

johp414389

Member since 
  • Gender: Male
  • Familiarity: I returned this product before using it

Loved the bag in terms of workmanship and materials, but I returned it when I decided that a 20 degree three season bag and a 40 degree summer bag better fit my needs. I replaced this with a WM Alpinlite and a WM Mitylite.

5 5

Steve

Member since 

I have been using my 6' mega for 2 yrs and am so pleased with how the temp rating is right on but I have easily pushed the temp rating by wearing long unders. I have put on my down sweater inside it and been too warm so Im not sure where the bottom temp is on that combo.You can only do that because of the generous cut. Buy this bag and feel like a very smart and patriotic outdoorsperson!

5 5

Szu-Ping Lee

Member since 
  • Gender: Male
  • Familiarity: I've used it once or twice and have initial impressions

This bag is just great. I am 6'2 185 lbs and bought the long size. I am a side sleeper and prefer space inside of my bag; this bag fits my needs perfectly. Lofty, warm, light, and smooth are the four words that sum up its features. I can't believe a bag this spacious actually fits into the included XS stuff sac. I especially love the smooth inside/outside face material, it just feels very soothing to the touch, unlike the Montbell u.l.'s tissue like material. Few people talked about the function of a smooth face material on a sleeping bag, but the smoothness of the inner surface lends itself to allow easier tumbling and turning, without taking the bag with you.
My wife and I can even use it unzipped as a comforter, and achieve decent warmth and comfort. It also shows minimum down leakage, which is a serious problem in other bags that I have owned. This is one piece of luxurious equipment that I can honestly say well worth the money.

Szu-Ping Lee

Member since 
Responded on

Took the bag for an overnight in Zion NP, the low temp. was in the high 30s. With an uninsulated pad, still no problem at all. Even with all the extra space of the long bag, I didn't feel any cold spot the entire night. I do always wear a light insulated hoodie to protect my head and neck. I am comfortable taking this to its rating as is, and to 20s even high 10s with a good puffy jacket and pants (more than enough space for that in this bag).

Szu-Ping Lee

Member since 
Responded on

Just took the bag for another trip to 10000 ft. alpine snow.
Low was 29F and windy (inside a single wall tent, good air flow), still good. A little cold when side-sleep, but there's not a fault of this particular bag. Leaning against wife solved the problem. (Is there a side-sleeper's bag?)

4 5

TL

Member since 
  • Gender: Female
  • Familiarity: I've used it once or twice and have initial impressions

This is my first WM bag and I'm hooked. Just took it on a 2 night backpacking trip. Super lightweight & compact. I'm a woman, 5'2 and the 5'6" is perfect. It is roomy in the shoulders good if you move around alot at night and/or for warmer temps but not efficient in temps below 40 (I stuffed my extra clothes in the space to make it work in upper 30's) I do like the bag, but because of the roominess, this will be my warmer weather bag and I'll probably get the Apache for more efficiency in cold wx.

5 5

mountainwalker

Member since 

I have purchased 4 WM bags over the years and have steered several friends to them as well. They are simply the best sleeping bags made. Superior quality and performance in every way. They are a work of art. I use the Megalite for most of my backpacking, It's just right for 3 season use.

5 5

mik5620827

Member since 

Received mine last week and took off for two nights. It was 38f and damp as is usual in the Sierras this time of year. I was totally warm and dry.

I have a MontBell 32f that cost $40 less and I was freezing last month. Big deal..save $40 for Chinese junk. I also had another high end brand 32f bag...same thing..Chinese junk.

I also have an Alpinlite. It is too much unless around or below 32f. WM bags are the only ones with real temp ratings.

Megalite

Do you guys every plan on getting the 6'...

edd5627229

Member since 
Posted on

Do you guys every plan on getting the 6' version in stock??

Steven Jones

Member since 
Responded on

Your best bet for a quick answer to stock questions will be to initiate a chat with a BC rep using the link at the top of the page. Best of luck!

Where are the 6 ft west mountaineering...

chaweber995625

Member since 
Posted on

Where are the 6 ft west mountaineering bags.every model I look at only has 5-6 and 6-6.

Dave Marcus

Member since 
Responded on

The bags are so popular that all of the normal sizes are out of stock right now. Check with a Backcountry rep in chat or by email or phone to see if they have an ETA on new orders.

I need to make one more check before...

nicolas.bo1988441

Member since 
Posted on

I need to make one more check before investing in two of these Megalite bags.
Assuming I get a Long LZ and a Reg RZ, can i couple/mate/zip two megalite bags together?
Thanks.

Muddrock

Member since 
Responded on

They should zip together, the only thing to consider is one zipper may be slightly longer. But these are the best bags out there, and made in USA. You wont be disappointed.

I wondering about this one or the Highlite....

Runar Dankel

Member since 
Posted on

I wondering about this one or the Highlite. I'm gonna use it as an ultarlite trekking bag for sleeping indoor or in a tent. For colder conditions I have an MH Phantom 15. Is there any reason to get this one over the Highlite?

Phil Maher

Member since 
Responded on

With the Megalite, you can shift the down around to load up in cold spots and have a bit more circumference, it has a draft collar and full length draft tube, wider cut and a full-zip, but the Highlite is less expensive, narrower, lighter, different material, about the same stuff size, rated 5 degrees higher. Comparing specs side by side, both sound like they would suit you just fine. Nothing that Western Mountaineering makes will disappoint if you appreciate quality and know your needs. That said, my personal preference would be the Megalite, if for no other reason than the extra room.

Leta Sharpe

Member since 
Responded on

Phil nailed the answer. Megalit is my call too!

mik5620827

Member since 
Responded on

Yeah...the collar and if you get caught out at 28f.

5 5

Cameron Deremer

Member since 

Spent two weeks sleeping comfortably in 30 degree weather. I never once felt the chills and most nights never even had to zip up all the way. Granted, I am a very warm sleeper, but I would take this bag down to 20 degrees with very little problems. Western Mountaineering makes a no frills (and no chills) bag that will last a lifetime as long as you take care of it like it takes care of you. The price is steep, but it might be the last bag you ever buy (or, if you are like me, just the first in the entire WM lineup). Add to all that the fact that it is Made in America and you should feel very warm about your WM purchase.

5 5

finn

Member since 

This bag is undeniable.

Hey guys i know the official packsize is...

Matt Mackenzie

Member since 
Posted on

Hey guys i know the official packsize is listed but is that compressed? or just stuffed? ALSO does the bag compress well i want a bag that goes down small =) Cheers!

Ryan Hamilton

Member since 
Best Answer Responded on

The pack size listed is usually uncompressed. Down bags, especially WM, compress really well.

Kate Williamson

Member since 
Groups:
Responded on

WM bags come with a regular stuff sac and so the compressed size listed is in a regular stuff sac. I've seen the Megalite compress to a little larger than the size of a softball before... Great stuff!

Evan Tougas

Member since 
Responded on

this bag comes with a large storage sack, it also comes with an XS 7 X 13 inch regular stuff sack. However, if you want it smaller than that, I recommend the sea to summit event compression dry sack. XS is 6X14 inch non compressed.

5 5

Evan Tougas

Member since 

Perfection? I've had my megalite for three years now, and I couldn't be happier. I've used on everything from multi-day backpacking trips, to multi-day cycling trips and three season recreational camping. I've never had a problem with it, and don't think I ever will. I purchased mine at another store, and they only had the 6'6" model, so I'm swimming in it as I'm only 5'4", but that doesn't effect the performance. Overall, I don't plan on buying another bag from any company except WM, superior quality and pack-ability.

5 5

Willy Syndram

Member since 

One of the biggest mistakes of my life was trading my 30 degree bag for a 35 degree. But bags are exceptional and both have accompanied me on Appalachian Trail thru-hikes, but I miss the full zipper feature that the Western Mountaineering MegaLite 30 degree bag has. I sleep very warm so my 30 degree bag with a silk liner keeps me warm even when the temperature got in the 20's. On warmer nights I would unzip it and use my bag as a quilt. It compresses down nicely and recovers it's loft quickly. The life time warranty is a great piece of mind, but I have yet to have any problems with any of my western mountaineering bags..

can i order this bag with 2 oz of...

rebecca2121193247

Member since 
Posted on

can i order this bag with 2 oz of overfill?

Josh Chapman

Member since 
Best Answer Responded on

Hey Rebecca,

Backcountry cannot ship it that way. You can order the bag and once you receive it, send it in to Western for an overfill. I believe it runs about 60 bucks for that.

mik5620827

Member since 
Responded on

Then get it from the factory.

Unanswered Question

This question actually pertains to the WM...

Andrew

Member since 
Posted on

This question actually pertains to the WM Summerlite, but the answer should be the same for the Megalite, thus I'm asking it here. I was told by a different dealer that a 6' RH zip and a 5'6" LH zip bags "cannot zip together". Does this mean that they physically cannot zip together, or just that there will be a little extra zipper on the longer bag?

Hey, I'm looking at a 30 degree, lightweight...

mansfieo2204745

Member since 
Posted on

Hey, I'm looking at a 30 degree, lightweight bag for summer, late spring and early fall in Idaho. I am having a lot of trouble deciding between the Marmot Hydrogen, MontBell U.L. Super Stretch Hugger #3 and the Western Mountaineering MegaLite. Anyone want to give their two cents to help me decide?

Hey, I'm looking at a 30 degree, lightweight...
moroni

Member since 
Best Answer Responded on

Here's my two cents:
Both Marmot & MontBell make excellent bags. I've used both but when it came to putting my money on the line, Western Mountaineering won hands down for these two main reasons:
1. WM bags have the greatest warmth to weight ratio. In other words, their ten degree bag weighs the same as the competitions twenty degree bag.
2. All Western Mountaineering products are made in the USA from the most state-of-the-art materials available.

I have owned two WM bags for many years & my answer is strictly a personal choice & preference.

5 5

Scott Swallow

Member since 

I love these bags. I have the Summerlite which is very similar to this bag but not as wide. WM uses the best down available, their testing of down usually exceeds a 900 and sometimes 930 fill rating. They base the warmth of their sleeping bags on an 850 fill which is why their bags are always warmer than what they say. My bag is rated at 32 degrees but it feels more like a 25 degree bag. If you haven't experienced a WM bag, then you haven't experienced a good nights rest in the BC.

I'm really intrigued by the continuous...

Steve Masters

Member since 
Posted on

I'm really intrigued by the continuous baffle construction. Any testimonies to how well people like this? Does the down shift much in the middle of the night? I'm used to opening my bag up to use as a down comforter on warmer nights, and am debating if I want to go with a continuous baffle or divided bag from WM.

Kurt Zogorski

Member since 
Responded on

Get the continuous baffle! Its far warmer for little more weight. Basically there is a bit of mesh between each section rather than being sown though.

The Blue Bomber

Member since 
Best Answer Responded on

I agree with Kurt. With a 4" loft bag like this, you don't have to worry much about down shifting (unless you sleep vertically like Batman). Go with the continuous baffle, the sewn through option creates cold spots where the bag is sewn, and is really only necessary when a bag has VERY little down in it (like the WM highlite). This bag has the perfect amount of down for its temp rating and I've never had any problems with down being in the wrong spot.

Scott Swallow

Member since 
Responded on

Continuous baffle construction is far superior than any sewn through option. Baffles aren't a negative, in fact he baffle gives the sleeper more options. Trust me, down will not move or shift during the night. I'm not even sure it would hinder batman all to much. You can make down shift if you want to, but it takes some significant effort. Sometimes I like to pack a little more on the sides so the top can breath a little bit better. If you just shake your bag a few times with the help of a friend, the down will settle back down evenly again and you're ready to go

schp82850

Member since 
Responded on

I have one and love it. The advantage of the continuous baffle, is that you can shake the down to one side of the bag, Hint! move the down to the side that you are not going to compress with your body weight. Use a good quality pad (or two) and then you will have all of the down insulation where it will do the most good!

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