Okay so I ended up returning this jacket. This was due to the hood being too big (even when I tightened the velcro all the way). I'm not sure why marmot decided to make the hood so big... i really can't imagine someone using this jacket while wearing a helmet (maybe belaying somewhere with loose rock that could fall on your head?). Regardless, this is a pretty darn good down insulator. It's extremely puffy, lots of down, really nice features. Fix the hood and this is the jacket.

I'm not sure what the guy was talking about with no down in the sleeves... maybe he received some defect but the one I received had sleeves loaded with down, along with the rest of the jacket.

I ordered this jacket when it was 20% off. I had a MH Phantom jacket and I was looking for something with a DWR finish and a hood. When this jacket came, I gave it 30 minutes to fluff from being in the plastic bag. I could not believe how thin the sleeves were. There was hardly any down in the sleeves. It had half the fill as my MH Phantom. I sent it back. I got the First Ascent Peak XV Down Jacket. It has a DWR finish with 850 fill down. It listed for $270. It is a far better jacket.

If you want every gram of weight to go to down insulation instead of fabric and features this is the jacket to get. Design and construction is excellent. The other reviewer who said its mediocre is misunderstanding the intent of the design. He said there is no internal baffle; there is an internal baffle as well as an external one and both brilliantly reversed to keep wind from reaching inside. He talks about the Velcro being too weak for high winds...THIS IS NOT A HARDSHELL. It's not a storm jacket, its deep cold insulation to be worn during static situations like sitting around a campsite during winter temps. I bought it for winter survival in an unexpected forced overnighter while backcountry skiing. It stuffs into an ingenious inner pocket that also protects it during transport. As I said, the best thing about it is all the weight is in the down.

I haven't had a chance to put this to the test yet. But just from wearing it around in just below freezing temps, there is a significant draft that comes through the zipper. Theres not enough Velcro or there needs to be an internal vertical baffle to block the air infiltration.
The Velcro that closes the jacket near the neck is just two tiny pieces that would never stay shut in high winds or snowy/icy weather. The elastic cords to cinch the hood always come untied and i had to ghetto rig them to not come undone. the neck area does not come up high enough so a draft goes right down your front and around your head unless you cinch it so you cant see although i would imagine that a helmet would remedy this situation. lots of complaints but pretty light so it's a trade off. i choose the lighter becasue it still gets the job done just not as efficiently. Any yes theres even lighter than this out there.

I bought this jacket for extreme conditions in high latitudes and/or altitudes of arctic and sub-arctic Alaska. I didn't have it during the worst of the season, so haven't had the opportunity to give it my ultimate test. There are some readily evident pluses and minuses for this jacket. The baffled construction is excellent, draft tube is very effective, pockets are placed well, and range of arm motion while wearing the jacket is great. Very little mass and packs down very well.
Pitfalls include a poorly designed, over-sized hood that can't be synched tight without pulling over the eyes. This alone made me seriously consider shipping this thing back, but I got it during a pretty sweet sale, and think I have devised a way to deal with it. Also, the collar is not separate from the hood so it doesn't close any tighter than the hood resulting in a draft down the collar if you can't figure out a way to get the hood tight. The main zipper on mine is not as smooth to zip as I would like, but it is tolerable and I can't assume this is more than a flaw with this particular zipper rather than all the zippers on all the Greenland jackets. And as I anticipated, the lightweight nylon of the shell does not appear durable at all, but does offer promise to avoid trapping moisture (waterproof and breathable are an impossible combination in extreme cold) and weighs nothing, which were two features I was more interested in. I've worn a thin, oversized, nylon wind shell over it in situations where protection from abrasion or high winds was needed, which has seemed to provide adequate reinforcement so far; that is another layer I always carry anyway.

I bought this as a warm jacket to throw on over the top of my regular clothing when I'm standing around in the backountry. (And for sitting around camp when snow-camping etc.) For that purpose, it's outstanding. Firstly, let's be clear what this garment is not: it's not waterproof, and it's not tough -- it's not built to walk through thorns etc. If you try that, you'll rip it to shreds. What it is is SUPER WARM, and SUPER LIGHT and compressible. For it's intended purpose, it's absolutely outstanding: the negative reviews are clearly from people who expected something different. The hood is large enough to comfortably fit over a helmet. The sizing is generous: I'm 5'11', 160lbs, and M is large enough to wear over my ski jacket with several layers underneath. The down is top quality, very voluminous, and the baffled construction (seams not stitched all the way through, causing cold spots) is quite impeccable. It could be more windproof, I suppose, but that would make it heavier and bulkier, and if you're standing around in a hurricane, you should wear your hardshell on the outside! About the only thing I'd change is to make the jacket a couple of inches longer to keep my backside warmer. However, I assume this is targeted at mountaineers who want to wear a harness without getting the jacket tangled up. Again: insanely warm, insanely light, breathable, compressible, etc. Awesome.

I used this jacket for field work in North Greenland, where temperatures were around -15C (+5F). I have not been cold at all. I'm a girl, 5'7, and bought an M.
With warm base layer and thick fleece (MH Monkey fleece) underneath, I could sit by -15C (5F) all day without getting cold (not much wind though..).
One of my friends had bought the Mountain Hardware Sub Zero Parka, so I'll compare both to help you choose:

- Greenland is slightly warmer. It looks bigger, also. However, none of us was cold.
- Outer fabric of Sub Zero looks more sturdy. It has reinforced material under the arms and over the shoulders. However, I was carrying metal trays that were not properly deburred, and scratched my jacket many times without ever poking a hole through it, so I would say that the outer fabric is more sturdy than it looks. If you are looking for a solid outer shell, go for Mountain hardware, though.
- The very large pocket inside is definitely a plus: the MH jacket does not have a large pocket inside the jacket. I really loved having one: I can fit the camera, a spare pair of gloves, a beanie, the VHF radio, and there is still room! Since everything would freeze on the outside, I find it really useful (although it makes me look fat on the pictures..)!

In a nutshell, it is a very warm jacket, well built (although the outershell seems a bit weak). I have not found cold spots, and trust this jacket to keep me warm until at least -20C (-5F), even when windy. For colder temps, I have a secret weapon: there is room to put a down vest under it. Did I mention that it feels light, and it's very easy to move around in it?

When the mercury drops, reach for this guy. I love mine, my frinds fight me for it when it is my turn to climb and wont be wearing it. I love it while belaying during ice season. It stuffs fairly small into the inside pocket, however it ends up in a really strange shape that doesnt fit well into anything, so i use a small stuff sack and then everything is good. The hood is roomy enough to fit over a helmet. It is light enough that I can carry it on summer epics as an emergency bivy plan. I know it would keep me alive. I cant say anything bad about this other than people will fight over it.

What makes the Greenland Jacket a cut above the rest? Baffles. Combined with 850+ fill down, the baffles in this jacket eliminate cold spots in seams to produce the ultimate efficiency and insulation. The built in hood is a continuation of the body, keeping the same loft around your head as in the body. The three types of pockets are also designed to keep you snug. First, the hand pockets are lined and allow you to insert your hands under the down, against your body to quickly warm them up after being exposed to the cold. Second, the inner mesh pocket is big enough to hold a liter of water, to keep it from freezing. Third, the entire jacket compresses into an inside waterproof pocket, allowing you to stow the jacket on the outside of your pack, making it easily available during rest stops or right after you roll into camp. Even a winter night high in the Utah mountains was no match for this jacket—we stayed cozy in sub-zero weather.

The only drawback to the jacket is the main zipper: it is temperamental when the waist draw is tightened. It takes some getting used to or loosening, but is definitely not a show stopper. The water resistant nylon exterior sheds light moisture, but should be accompanied with a shell in storms. The Greenland Jacket is a competitively priced, well-rounded, and efficient down that will keep out almost any type of cold. -1 lbs. 10 oz.