Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Mountain Equipment - Lightline Down Jacket - Men's - Kiwi
  • Mountain Equipment - Lightline Down Jacket - Men's - Navy
  • Mountain Equipment - Lightline Down Jacket - Men's - Lagoon Blue
  • Mountain Equipment - Lightline Down Jacket - Men's - Black

Current Color

  • Mountain Equipment - Lightline Down Jacket - Men's - Kiwi
  • Mountain Equipment - Lightline Down Jacket - Men's - Navy
  • Mountain Equipment - Lightline Down Jacket - Men's - Lagoon Blue
  • Mountain Equipment - Lightline Down Jacket - Men's - Black

Mountain Equipment Lightline Down Jacket - Men's


Free 2-Day shipping on orders over $50*

Select a Size:

Select options
  • Select options
    • S
    • M
    • L
    • XL
    • XXL

    Select a Color:

    Select options
  • Select options
    • Kiwi
    • Navy
    • Lagoon Blue
    • Black

    14 Reviews


    Light-as-air technical down for serious alpine conditions.

    Designed to meet the needs of mountaineers who routinely spend time in harsh alpine environments, the Mountain Equipment Lightline Down Jacket is designed to shield you from the cold when staying warm isn't just preferable, but essential. The windproof and water-resistant DryLite outer shell is packed full of 675-fill down, stitched in horizontal baffles to ensure that the insulation stays where you need it most. The down itself is an incredibly warm 90% down/10% feather mixture, which is the warmest down/feather ratio generally commercially available. Mountain Equipment gave the Lightline a fully-adjustable zip-off hood so you can trim weight if you need to, and used stitched-through construction to ensure that it isn't carrying any extra bulk that can be a hassle on serious alpine expeditions. An insulated baffle sits behind the zipper to prevent drafts and heat loss, and the zippered hand pockets are covered by insulated flaps for the same reason.

    • 675-fill down (90% down/10% feathers)
    • DriLite windproof and water-resistant outer fabric
    • Stitched-through horizontal baffles
    • Fully-adjustable 3-panel zip-off hood
    • Insulated baffle behind front zipper
    • Insulated flaps cover the handwarmer pockets
    • Adjustable cuffs and hem drawcord
    • Item #MEQ0003

    Tech Specs

    [face fabric] DriLite Loft, DWR coating
    675-fill down
    Baffle Construction
    yes, zip-off
    [external] 2 handwarmer, [internal] 1 mesh chest storage
    Claimed Weight
    1 lb 11 oz
    Recommended Use
    climbing, alpine & expedition
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Best Down Jacket I Own

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Medium

    I have a solid selection of down jackets from all the big players, Arcteryx, Patagonia, Marmot...And this is by far my favorite down jacket when it comes to warmth and comfort. Very lofty and great fitting, this thing is my first choice when the temp drops down into the single digits! All the features you would expect at almost half the cost of a competitor, I would highly recommend this to anyone looking for a new down jacket!

    Perfectly not puffy

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Large

    This is an amazing jacket! Super warm, athletic cut, not overly puffy and a durable feeling fabric. I've had it out in 12 degrees F with a T shirt and was perfect... If you need a warm coat and hate lookin puffy like I do, this IS the coat.. The hood is amazing as well... Can't recommend enough

    Extra Puffy

    • Familiarity: I gave it as a gift but have feedback to share
    • Fit: True to size

    My boyfriend wanted a down puffy that would be significantly thicker than his Patagonia Nano Puff or a similar down midlayer, and after going through just about every option on the website, I settled on getting him this one.

    Neither of us had any experience with Mountain Equipment before, but so far I'm really impressed. The face fabric feels tough and durable, like it can stand up to plenty of wear, and he's thrilled with the puffiness of the jacket. We both thought it looked huge in the bag, but when he put it on, the sizing was true. Mountain Equipment packs enough down into this jacket that it doesn't sag or compress after having it on for a few minutes, and my boyfriend's excited about how soft the inner liner is, since I'm sure he'll be throwing this on with a t-shirt for quick dog walks in the morning and evening. Overall, really impressed with this jacket so far. If you want a step up from down midlayers but don't need to go all the way to an expedition jacket, I'd highly recommend the Lightline. And if you do take it outside, it has a technical hood that looks like it'll be toasty warm in a snowstorm.

    Nice Jacket

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: L

    A little light on down on the inside of the elbows and back of the hood but other than that it is a well made jacket. I bought one black one gray.

    Very warm

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Large

    Very warm, very light, and very comfortable. I used this jacket in 10'F to 19'F weather with just a t-shirt, and it was able to keep me warm. Great jacket.

    Dave MacLeod's Project Fear

    In the summer of 2014, Mountain Equipment athlete Dave MacLeod set his sights on opening a hard new route on Cima Ovest in the Italian Dolomites. A bold objective for anyone at any time. For Dave though, this project brought with it some of the greatest challenges he has ever faced.

    Great and windproof

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    A great jacket for skiing on cold days, as it is truly wind proof. I've had it out on many days below 10 deg F with just a light turtleneck underneath and was always warm.

    Great jacket

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Medium

    Bought this jacket for a winter summit hike on Mt.Washington. Wore just this jacket and a tshirt with -60 degree windchill and stayed comfortable warm. I usual wear a size small but the medium was a nice fit for me.

    Great jacket

    I've spilled coffee on it a few times

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    Massively warm jacket while still being light. I use it everyday both for walking to class in Burlington, VT and also as the last layer/belay jacket for winter activities. I've been out in some pretty cold weather (-10F before windchill) and it's kept the chill out very well. The hood is big enough for a helmet and I'm a fan of the elastic/velcro cuffs-- much prefer these to my MH Compressor's. The pockets are warm and big enough to fit a couple beers in. As stated I have spilled significant quantities of coffee on it and the DriLite has performed as good as I can ask, it also blocks the terrible Burlington wind very well. My only concern is that it feels thin and if I brush up against branches I can imagine it ripping-- but it hasn't yet and it's no thinner than other jackets. I'm 5'7" 145lbs and a medium allows for layers and a little less restriction, I initially ordered a small and felt that I would be restricted and the zipper was a little too tight up top to properly snuggle into it-- but I also have a big ol' dome. Also wish the hood wasn't zip off, it just adds something that could go wrong but I've not had any issues thus far.

    Hardcore Cold Weather Protection

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    I ordered the Mountain Equipment Lightline Down Jacket after weighing options from all of the top brands. I read reviews, studied the specs and chose this piece because I felt confident it would handle anything Old Man Winter could throw at it. I was right. This jacket provides superior warmth in a relatively lightweight package with serious attention to detail. The hood is one of the best on the market. It's deep, adjustable and provides maximum wind protection. The pockets are deep, well placed and lined for warmth. The shell, while sturdy and well made is not as strong as I would like (be careful of sharp objects on the trail or slopes), but you have to admire the construction and quality of the materials inside and out. Adhering to the Down Codex, the feathers are ethically sourced and the jacket is stitched in such a way that they stay in place. The cuffs could use additional elastic, but the adjustable tabs make up for the slight lack of snap around the wrist. The fit is true, it hits right between the waist and hip, but is cut for a more athletic build. If you've got a gut, or large waist, order up a size for sure. I'm 5' 10" with a 43 inch chest and 33 inch waist, and a medium fits perfectly. This jacket is for serious cold. Start wearing it over a light base layer after the temps drop into the teens, and feel confident it will handle -20 degree f wind chill with no problem. I mentioned earlier to be careful with the shell around sharp objects. Let me explain: I took a slide on black ice and a piece of rock salt tore a 3/4 inch gash in the back. I wore it for two days before I found the tear and did not loose a single feather. I reached out to Back Country to see if they could recommend a repair methodology, and my Gearhead Matt P. had one suggestion: send it back - no questions asked - and he shipped the replacement the same day. Ask Amazon to do that for ya! love the site, the people and the products.

    Interactive Puffy Comparison...

    Again, I'd like to thank and Mountain Equipment for giving me the opportunity to use and review this jacket, but I feel a little guilty, as I haven't yet been able to use it the way I plan on using it in the near future. (High above the treeline on a snow-draped granite Sierra knife-edged ridge...)

    In an effort to provide some useful information and feedback, i made this thing:

    (Sorry...Can't figure out how to hyperlink gotta copy-paste...takes a few seconds to load and start...)

    Basically, it's an interactive photo comparing the various insulation layers I use. It works on anything (iOS device, droid, desktop) but it looks coolest on a desktop/laptop, IMHO.

    Try clicking on the "Projections" menu (upper left) and choosing "Stereographic"€. Or any of the other options.

    You can zoom in and out to read the text, you can click the "Home" button to reset the view. You can fullscreen it, and you can view a map of where I was, if you care.

    I've tried to explain where this jacket lies in the scheme of things in the link, but I'm really loving this thing so far.

    It's warmth-to-weight ratio is impressive and it's just a very well thought out piece.

    I'll post a better a better review with cooler photos as soon as I can get back out there and hit some objectives.

    My life has been uncharacteristically climb-free for the last month and that is NOT cool, man!

    Not cool.

    Interactive Puffy Comparison...

    Just some initial impressions...

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size

    First off, thanks to and Mountain Equipment for hand-selecting me to review the Lightline Down Jacket for the benefit of the community...this is the first of a couple of reviews of this, I'm sure.

    Because I live in SoCal, there has not been a ton of need for a down jacket of this magnitude up until...well just yesterday. Finally nuked in the Sierra and got cold. (stupid global warming...).

    When I received the jacket, my first thought was, "Whoa, this thing is full-on." Like most of us, I've had and still have a collection of outdoor clothing, including various insulation layers.

    This jacket falls right in between my Mountain Hardwear Compressor and my First Ascent Peak XV. (Which fell just south of my Mountain Hardwear Absolute Zero.)

    The Peak XV is just way overkill for Winter in the Sierra (I bought it for a Denali climb) but the MH Compressor isn't enough, alone, for that purpose. For the last two years, I've developed a puff/insulation layering system that includes a few other pieces of gear. I've used it in lots of places and in lots of conditions, but every now and then, as I'm settling into a campsite at 12K or a bivy on a glacier, the dreaded "Dude...I'm cold." echoes through my mind somewhere. Plus, while multi-use items are valuable in the mountains, so is simplicity. Sometimes the orchestra of interacting gear becomes a pain. SO...I'm stoked to be able to use this for those purposes, and it even spurred me into buying some OR puff pants for this winters Sierra excursions.

    Anyway, the fit of this jacket is definitely "parka". I'm 5'6" and the small fits me exactly like I want a parka to fit me. Comes down a little past my waist, sort of to my pant pockets. The hood is awesome, articulated, removable and has a cool little adjustable brim. Hand pockets are super plush and you just wanna use em.

    It seems to strike a good weight/bulk/wearabilty balance.

    It's beefy, but not TOO beefy.

    More later...

    This sucker is warm

    • Familiarity: I've used it several times
    • Fit: True to size

    I just spent my winter holiday in rural Wisconsin with temps reaching negative 12 F and I can say that I really like this jacket. I stayed warm with this wearing only a capeline 2 top and a t-shirt underneath. I even broke a sweat when loading wood for the fire. The shell material is solid and the dual zipper makes this a great belay jacket. And the bonus ... this is one good looking jacket, so get ready for the compliments.

    We have a winner

    • Familiarity: I've used it several times
    • Fit: Runs small

    After an extensive search on down jackets with removable hoods....we have a winner. I have 30+ years of climbing , outdoor work and recreation in Colorado. First the hood: zips off, fits and adjusts great, tidy and compact when not in use. Nice 650 down fill. Modern style without going crazy. Velcro cuffs....check. Durable 40 denier nylon shell that's H2O resistant. I usually buy marmot or patagonia but their offerings pale in style, function and price.

    I usually take a large but fit great in XL with some layer room. I'm 5' 9" tall, 160 lbs with large shoulders.Two minuses for this coat. Euro zipper seems made for left handed folks. A bit odd, but not a deal breaker. No powder skirt or waist draw. This jacket however will not disappoint.

    Warm Warm Jacket

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    if you like being cold don't get this coat. If like warm, lightweight, durable, good looking down jackets you should buy this for sure!!!!!

    Unanswered Question

    Hi there. Are you able to tell me the measurement of length of the back of this jacket please? My husband has a longer torso than average so I need to know if this jacket will cover his lower back..the length needs to be at least 30-32inches. Cheers :)

    why do some of the colors in the sample photos have 7 rows of insulation and other colors have 8? It looks like some of them are a few inches longer than others. Are these images showing two different models of jacket, or two different sizes? I'm asking because I'm trying to determine length of the jacket in a size M (does it cover my butt?).


    Great question! When looking at the images, it looks like a Small was used for the product photography on the ones that show just 7 baffles. For the images with 8 baffles, those look like a larger size was used for the photo.

    Shoot me an email anytime you have questions!

    Jared D.

    Expert Gearhead


    According to the size chart this jacket...

    According to the size chart this jacket under normal chest size, waist less than usual. For example, size L usually corresponds to the waist size 34-36. It is usual. At this jacket waist contains - 34. I ask this question because I have not athlete figure. Tell please, this jacket narrowed waist ? Thank you.....


    The sizing charts you will often see attached to a product page are very rarely product specific and more often are general sizing advice for an entire brand.

    In this case, the waist sizes are not specific to the Mountain Equipment Lightline Down Jacket. This jacket has a regular fit, and my experience from trying it on makes me think that the large would fit just fine for someone with a 36" waist.