Not miraculously warm, but a nice piece for traveling light & fast. Goes great with a 40F sleeping bag. In size small weighed about 7 oz. There are any number of sub-1 lb jackets which will keep you warm into the low 30's, but this probably isn't one of them. The difference is of course the light weight and small packed size. I wore it with a marmot driclime windshirt and a midweight wool base layer on cool (high 30's) mornings and evenings and while I wasn't toasty I wasn't hypothermic & shivering either. I have 12 oz jackets which would have been warmer, but then I would have been carrying 5 extra ounces...

This is a great jacket. The weight-to-warmth ratio is really impressive. I'm also pretty impressed by how will it breaks strong wind considering how thin it is. I have yet you spend long periods outside in harsh temps, but I'm confident it will do quite well with a shell overtop.

The fit is nice and trim, which I like. I'm 6'0'', 175 and wear a medium (don't like looseness).

我是170cm接近70kg，中号对我来说大了，小号正好合适。手感很好，非常喜欢！

This jacket is super light, warm, and comfortable and honestly amazing but the only issue is QC on the threads. Ordered one jacket and sleeve threads were catching and snagging on zippers when using pockets so I sent back and the second jacket has the same issue. It looks like in random places the threads are not sewn down and leave little loops to catch on zippers.

Superlight, very warm, looks the part, essential gear for the mountain life, folds into itself for storage and you must buy one.

It's light, it's warm, it's breathable, it's technical, and it's classy.
It is the go-to business coat to wear to mountain town meetings.
It's the mountain goer's go-to outdoor coat for mountain top meetings.
It packs well into its own zippered pocket (also can be a pillow in a pinch)

As far as mid layers go, there is maybe only one other jacket that I would try for a performance light weight down. I've had this coat for about 3 years now and gone through 2 cold Utah winters. Its great for a stand alone jacket in dry cold weather. Super warm for a mid layer under any shell. Comfortable to wear in doors just hanging around. What you make up in weight and comprehensibility is definitely lost in durability but that is some what to be expected.

The jacket is very light and compacts into its pocket.
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I've used a GW vest for 3 years and have loved every minute of it. The full jacket is a super addition. I swear I am being hugged by angels every time I wear this jacket. The hood is great. All of it fits nicely under my shell.

I have the women's version, but many of my male friends also have this jacket. I LOVE this jacket. It goes with me on any trips or jaunts up in the mountains. It easily stuffs into a pocket and has a loop so can be clipped to a climbing harness. It's slightly wind resistant so that's nice as well. I always run cold, so was worried that this thin of a jacket wouldn't do well for me in most conditions, but was wrong! I have the unhooded, but can see uses for both. The men's has a regular fit and is true to size.

I’ve had this jacket for about two weeks, before Everest and thailand for some trekking fun. I’ll be conducting a post trip review in addition to this one.
Initial Reaction-
My initial reaction of this jacket was “whoah this thing weighs nothing!”. After trying it on and walking around with it I realized this jacket was no joke. Despite the jackets very light weight, It is ludicrously warm. The material feels strong, and that It wouldn't tear under heavy use, even with the jackets lightness. The materials feel sturdy and well put together.
-Zippers function properly with no catching, or mismatched zip.
-The hoods elastic (I purchased the hooded version) covered my head properly and was strong enough to make a seal with my face to stop wind from channeling in.
-The elastic on the wrists of the jacket worked similarly to the hood, strong but easy to slide up and move around if needed.
The sizing seems true, (I’m 5’ 9” with a skinny ectomorph body type) I purchased a Medium and it gave me a great fit around the shoulders, but was slightly large around my waist. I find this okay because I’ll be using this as a layering piece, and that I’m a fairly skinny person around my waist.
The breathability of this item is fantastic and kept me warm without killing me with heat indoors on my initial reaction.
Two weeks in-
After hiking almost everyday for two weeks, I’ve found that this jacket still hold up in most of the criteria covered in the initial review. That being said, after two weeks a couple points have come up worth mentioning, first and foremost -The only real issue I’ve come across is while wearing a hiking pack. Upon use with a heavy bag, the down material shifts around occasionally and causes cold spots throughout the back of the jacket. This is partially from sweat condensing the down material, and partially from the shifting weight of the bag on my back. Fortunately this Is remedied by letting the jacket dry (which it does quickly) and shifting some of the down around by hand. I know this is an issue with most down jackets (cold spots) and the Ghost Whisperer is no exception.
Quick overview of previously mentioned points -
-The lightness of this jacket is still amazing and very useful in packing
-The warmth still impresses me with every wear
-Still sturdy as hell with no rips or tears from daily use (and falling into a bush)
I was Impressed with its drying and waterproofing capabilities and after doing the Redbull 400, while raining, I can say this jacket kept me comfortably warm and fairly dry. TAKE NOTE, this is not to be a substitute for a hardshell waterproof layer, but something light and warm to be layered below it.
Conclusion- This jacket is well worth its price in utility, as a down layering jacket or something stand alone on dry, cold days.

I have owned one of these for 5 years now. Every time I see a new lighter down jacket, I immediately am comparing it to this jacket. I have a hooded and a non-hooded version because I love it so much, and even bought my fiancé one too. I take this on just about any adventure with me. It is so light and compact, it is almost foolish not to take it. It folds up into its own front right pocket. When stuffed into the stow pocket, it can be compressed much further. I use a dry compression sack for my down sleeping bags, and if I am not planning to need the jacket on a spur of the moment, I will keep it in my sleeping bag compression sack. If you are in the market for a light down jacket, I would strongly recommend taking a look at the Ghost Whisperer. Both my fiancé and I found them to be true to size.

Feel free to reach directly out to me with any questions on the jacket or anything else at all!

The jacket is very light and compacts into its pocket. Water beads on the shell, even though it is not waterproof. The elastic on the cuff seals out the wind. The hood is warm on those cold nights. I recommend it and would buy it again.

This jacket is extremely warm for its weight. Fits very well, and compresses down into its own pocket nicely. Certainly recommended and worth the money. Many reviews talk about poor zippers but I don't see the issue, all you have to do is make sure the zipper is pulled down all the way and you won't have an issue. When you unzip the jacket make sure the slider is unzipped all the way down into its starting place and it will come apart with no problems.

I've used this jacket as my primary insulation under a gore tex shell for 2 ski seasons and have absolutely loved how well the combo has kept me warm. The hood fits well under my helmet on the coldest days and eliminates the need to put something around my neck. I also used this for one season as my commuting jacket (cold MN winter) and it had held up well until the bottom plastic piece holding which holds the zipper together broke. I'm hoping Marmot will repair this for me under warranty. This is certainly a ultralight jacket but a stronger zipper with dual zip capability would be an excellent upgrade. Other than that it is a perfect layering jacket that folds up into a pocket well. Large fits a little snug but that is great for fitting under a shell jacket.

My only complaint is that you can't unzip from your waist to cool off, and there are no pit zips. Other than that, it's a great jacket.

Purchased this product a couple of years ago, a hoodless version, and decided to get a second one with a hood for colder weather, etc.. The best thing about this jacket is the weight, it is ultra light imo. I also have a couple others, North Face Thermoball and Eddie Bauer...this is the one I throw in the pack when needing to count ounces and stay warm.

I use it for hiking, snow shoe, snow board, walking the dogs, etc. I was initially concerned about the shell, but it seems pretty durable. Works well with layering. Loft is great and it packs down well too, no pun intended. It has some water resistance capacity which is nice too. I live in the Pacific Northwest and we do get some moisture.

I'm not a huge guy and have somewhat of an athletic build. I'm usually struggling to size between a small and medium. The small was too tight in the chest/arms for me so I went with a medium. I can comfortably get a couple of layers underneath this jacket and then throw a waterproof shell over it if need be. If mobile and working, this coat is comfortable and warms up, and don't need as many layers, the beauty of down.

Really like this jacket...hence bought a second with a hood for those conditions when I'll need that.

This is a great mid-layer jacket. It's light weight and very warm for the weight. Durability can be an issue, but that's the trade off when you buy an 8 ounce down jacket. I wouldn't recommend it for daily use because it will wear out quickly, but for backpacking purposes it is perfect. We had roughly 2 feet of snow dumped on us over night and I wore a wool base-layer, this jacket, and my rain shell to explore my winter wonderland and was incredibly comfortable. If you use this jacket how it was meant to be used, you will be ecstatic with your purchase.

Great warm jacket and great used as a midlayer. Skip this jacket if you are going out and there's a heavy downpour, down feathers have dwr but not the seams and hems, water goes in and gets absorbed in matter of minutes, wear a rain shell when going out on a rainy day.