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Phantac 2018 [Mens] hydrophobic warm goose down jacket

Phantac Mens Hydrophobic goose down jacket


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Phantac 2018 [Mens] hydrophobic warm goose down jacket

750 fill power Nikwax Hydrophobic goose down jacket, designed to be packable, lightweight and incredibly warm for fast and light climbing and mountaineering

£129.00 Was: £229.00

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  • Full Description
  • Features At A Glance
  • Care & Environmental Advice
  • Size Guide
  • Customer Reviews

If you’re going the distance with that Alpine start, you may as well be wearing a jacket designed to go the distance. Especially if that jacket is as lightweight, packable, and warm as the Phantac is.  

Phantac’s warmth to weight ratio and pack-size is unparalleled in our range, making it ideal for fast and light alpine adventures when the temperatures are dipping below zero.  

The lightweight, water resistant and durable shell fabric is filled with 750 fill power Nikwax Hydrophobic goose down. This high-quality down permits us to use less fill without sacrificing warmth, for a lightweight and super packable outer layer. 

Phantac is cut to a fast and light technical alpine style, tailored for active use. Articulated arms, with vertical baffles on the elbows and shoulder, give freedom of movement; a 2 way zip permits a harness underneath.  

High external pockets make your stuff easily accessible and 2 large internal pockets are ideal for stashing gloves. A drawcord hem and elasticated wrists minimise heat loss, and the soft-touch lining adds comfort for day-to-day use. 


Nikwax Hydrophobic is a water repellent treatment that makes down less susceptible to humid conditions, staying lofted for longer and prolonging the overall lifespan of your down.


We use only RDS certified down; all our down is audited by a third party to ensure that it comes from birds who are not live-plucked, force-fed, or mistreated. That’s good know.

Key features
  • Goose down jacket for fast and light alpinism
  • Lightweight and durable shell fabric
  • Articulated arms cut for movement
  • Helmet compatible hood with volume adjuster and elasticated front adjustment tucked away inside chest pockets
  • Insulated zip baffle reinforced for zip protection and chin protector
  • 2 large external chest pockets; large internal mesh glove pockets
  • Internal attachment loop for keyring or gloves
  • Internal breast pocket for keeping gadgets warm
  • Internally elasticated cuffs don’t absorb moisture
  • Nikwax Hydrophobic down
  • RDS certified down
  • C6 DWR coating helps to prevent dirt and moisture absorption
  • 3 Year Alpine Bond
Vital stats

Fill: 90/10 European goose down; RDS certified, Nikwax Hydrophobic
Fill power: IDFB 750
Outer: 15d 100% nylon ripstop (300 mm HH), 35 gsm
Inner: 20d, 45gsm 100% polyester ripstop
Construction: Stitch-thru

Weight: Total / Fill

S: 505 g / 200 g
M: 550 g / 218 g
L: 565 g / 225 g
XL: 580 g / 238 g

Origin: China

Product Care Information

​You can and should wash this garment, most active outdoor folk do this once or twice a year.

Washing and re-waterproofing flushes out the dirt and oils that have accumulated so that it puffs up nicely and works better in damp conditions

Don’t panic! Down is surprisingly durable and washing is not an onerous task. You can wash it in a front loading washing machine with these instructions…

Size chart Mens technical clothing
Men's sizing
Chest (inches) 37" 40" 43" 46" 49"
Waist (inches) 30" 32" 34" 36" 38"
This size chart indicates the body measurements our garments are designed to fit. Measure yourself as described below, and use the size chart to find your size.
Chest: measure around your chest at the widest part. The tape measure should pass under your arms, and be level from front to back.
Waist: measure around your waist at the narrowest part.
Hips: standing with your feet together, measure around your hips at the widest part.
What You Say: Customer Reviews and Comments

16 Reviews


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New favourite jacket!

Very warm! Great fit! Very light and compacts small!


I bought this jacket for a trip to New York. The temps were dropping to minus 8 at night and to a max of minus 1 during the day. This jacket kept me toastie warm at all time with just a t-shirt underneath. Bargain price and it looks great too. 100% recommended. Love it!

The daddy of down jackets

This jacket is brilliant. From cold belays to hanging out on the mountains, it performs really well. The fit is on the slim side as like it, though roomier than the very first version. I think beats most competitors by a mile, at a fraction os the prize

So good I bought two!

My wife kept stealing mine so I had to buy her one too (I bought her a men's as the women's range wasn't out then).

This is my go to jacket for warmth. I've used it fo everything from going for a walk in the park with the kids to wild camping in Torridon. This is an awesome jacket.

Great coat for value !

Best coat I've ever had, used with -2ºC and light wind and rain.

- Light, really very very light.
- Forearm enforcement is amazing.
- Smooth texture.
- Excellent protection against cold but it's not excessively warm, you get a stable confort temperature.

- Waist elastic band gets relaxed once you start walking but is the same for all the brands, I dindn't find a reliable mechanism to get the band tied to you waist.
- Better if the coat would be a little large at Kidney's area.
- Few plumes in shoulder's area.
- No close mechanism for wrists.

In love with this coat, I use it every day. I'm going to buy a Definition for rainy days.

Although this is the first time I buy this brand, it has become my new favourite.

Great Winter Jacket

The Phantac was my first Alpkit purchase, and I'm hooked! Well made, a good fit, and doesn't moult feathers everywhere like others before it. Long sleeves and chest pockets have been brilliant at keeping my normally-cold hands extra warm.

Due to a change in circumstances it's ended up being worn more and more around the freezing city over winter than out on the mountains, but I really can't praise it enough in the urban environment and general travel.

And combined with the Mamalute, nothing's kept me warmer!

Heath wilson

Absolutely love this product. Very warm very windproof. But if I don't get up earlier enough the wife has it on!!

Great Coat!

Very well designed jacket. Outer fabric seems much more durable than other insulated jackets I've owned and tried. Tried tnf, rab, me, etc. None the design features of this! It's very warm as you'd expect, and the cut allows unrestricted movement. I'm 6'2" 15 stone and the xl fits perfectly.
My third alpkit product and still extremely impressed with products and service!

Excellent jacket

Only heard of Alpkit recently. Bought the Phantac and was so pleased with the quality and customer service I bought a Filo 2016 as an everyday jacket. Great company to deal with.

great jacket

really pleased with this , very well made has a quality feel about it , well designed , nice length arms for reaching , hood adjustment from inside the pockets is a great touch , would buy again , and highly recommend

Ryan L
Very warm

Bought this for a winter trip to Scotland. It's well designed, light and very warm the arms are a good length and the cuffs work well. My only concern is that it's a little short and at 6'4 my stomach is sometimes a little drafty. Other than that you cannot fault this jacket

Good could be better

Great fitting jacket, like the long sleeves that can drop down over your hands when not wearing gloves. Lovely and warm and so far seems durable. Would have liked to see it come with a stuff sack and the chest pocket on the outside so you don't have zip the jacket down to get to my phone!

Phantac Jacket

I purchased this jacket on release, and have subsequently used it on every trip I have been on since. Whether camping at 4000m plus in the Ruwenzori Mountains or packrafting in Finland or walking the West Highland Way, the Phantac has kept me nice and toasty. The inside mesh pockets are handy; I use them to keep camera batteries warm or even dry socks between the down and a mid-layer.
The jacket is a nice fit with comfortable movement throughout, I wear a medium at 5'10'' and 80kgs.
For cleaning....well I haven't apart form using a damp cloth to wipe it occasionally and just keep it aired and hung up not stuffed.
A very good jacket at a very competitive price point.

Phantac & Apogee combination

Apogee & Apogee Phantac combination.

In my previous reviews I did a few tests with the Phantac to get some idea of it's measure and found that this jacket is not super warm but the results were still good as I have a down jacket from the high street that weighs at least twice as much, is about equal in warmth but much draftier and not so good in cold wind. In other words the Phantac is definately worth buying, particularly if you are a back packer and have a way to go carrying weight. However, if you are into doing something a bit more ambitious like camping up a mountain in Scotland in winter, where temperatures can reach well below -10C the Phantac on it's own is not good enough. So why don't I just get a big chunkey jacket that will be good down to -10C and lower? The reason is simply that such a thing would only be good for low temperatures. Great if you are in the arctic where it is cold all the time but not good if you are faced with temperature variations and fluctuations like in the UK and you want to use the same kit for all these conditions. The best way to go is to use a layering system and that is why I purchased the Apogee to be used in combination with the Phantac. Alone they both have draw backs but work like a horse and carriage in combination. The Apogee is not as warm as the Phantac but dries quickly when wet. It's shell is also far more water resistant than the Phantac. I did a rain experiment with the Phantac to test it's resistance to water which failed. I did a similar experiment with the Apogee. Recently I went shopping using the Apogee while wearing a backpack. The temperature was about +3C to +4C and there was torential rain for about 10 minutes and medium to light rain for 20 minutes. I was doing a brisk walk from town and I felt pretty hot. When I got home there was no sign of water penetration. (If this had happened with the Phantac it would have been soaked even though the Phantac is made with the same material.) I have even stood under the shower in the bathroom for 5 mins with the Phantac underneath the Apogee. Again the Apogee passed with flying colours. There were just a few beads of water on the Phantac underneath as some of the spray was directed directly on the zip of the Apogee. (There is no zip flap built into this jacket.) However, I regarded this as another successful experiment. The Phantac provides most of the warmth and the Apogee protects the down jacket underneath, adds a bit more insulation and is resistant to rain. Some sleeping bag manufacturers make synthetic bags to be used over the top of down bags to protect them from a combination of damp and cold temperature. These two jackets work in the same way. The down in the Phantac is kept at an elevated temperature by the Apogee which causes enhanced evaporation if any damp managed to penetrate into the jacket underneath. I don't know how low in temperature this combination of down and synthetic jacket will go but it's going to be lower than eather. I have sat outside usiing the Apogee for 15 mins at about -1.7C at fairly low humidity wearing nothing underneath. Although the Phantac felt much warmer in a seperate test, I was surprised to find that at the end of the 15 mins, I did not feel stressed in the test with the Apogee. The most important part of this combination is that they have a very broad working temperature range and can be adjusted in an almost infinate way by opening and closing inner and outer zips or adding and removing hoods to obtain optimum ventilation and comfort temperature no matter what the working conditions. And you can make thiese variations while on the move without having to stop to add or remove clothing. Although the Apogee is pretty water resistant I would not trust it in long periods of rainy weather. I would add the Balance which was designed for the job as an outer shell for security. The logic of this is that if you are blasted by snow etc, some of which may melt, you will still have two very dry thermal jackets to use in your sleeping bag if you are desperate and need them. Even a small amount of water in your sleeping bag can ruine a comfortable nights sleep in severe conditions.
The cut of these jackets covers my hips perfectly and given the correct extras like boots, gloves, thermal leg wear, base layers and mid layer fleeces I speculate that I could operate fairly comfortably in temperatures roughly down to about -10C to -11C if I kept moving. The loftiest part of the Phantac is the hood. On the Apogee it is the wrist which seems to have a double layer of insulation in it. This is a great innovation. The extra length in the arms enables you to pull your hands into the sleeves and this extra insulation keeps your hands warm. I find this to be much more efficien and warmert than using gloves and unlike gloves I can't lose my sleeves in a gale. These jackets are clearly designed to be used in less than arctic conditions, so if you are thinking about something way outside the norm, something potentially threatening like camping up a Scottish mountain (or other places like iceland) in winter where temperatures can reach as low as about -15C or less, I would go for arctic jackets which are loftier, higher fill power, maybe heavier and much more expensive. One thing I have noticed here in UK damp is that +2C to +3C in very high humidity with a slight breeze can feel colder than -3C in low humidity so you need to keep humidity in mind when doing your own tests.
I have recently discovered a company on the net (Scottish Mountain Gear) which restores lost down in jackets, sleeping bags and other garments which has relieved my angst due to lost down plumes in items like the Phantac....This is a stress saver if you really hate to see lost down plumes.

Phantac in colder weather

Phantac in colder weather.
Now that the temperature in my location has dropped a bit I've had a better opportunity to test it's thermal characteristics. One or two rogue down plumes are still running amuk but that aside, my tests have been in a range of temperatures from about +5C to -3C with a slight to strong wind and at a humidity level up to about 75%. I have tested it in a relaxed position while sitting in a deck chair in a temperature of about +5C. To do this I lined the back of the chair with a fleece towel. This is because down has two drawbacks. It's not good with water and it's also not very good when compressed so the fleece towel compensated for this. I could sit out in this temperature for at least an hour in this jacket without feeling the chill. I wore nothing under the jacket but had base layer and trousers for my legs, gloves for my hands and I had the hood up. I think I could have sat out there for two or three hours without it bothering me too much. I have also tested this jacket sleeping at around +5C but the results were rather different. To do this I used the jacket with nothing underneath. I used a thermal matt for laying on and a sleeping bag pulled only up to my waist. I could not sleep unless I at least had a base layer and warm fleece under the jacket. This jacket is quite warm wearing nothing underneath when strolling around at +4C but at Zero degrees C to about -2C I find that I am cold unless I wear at least a fleece underneath the jacket. A standard hoodie does the job quite well. I use a Medium Phantac and I have plenty of options to add more thermal layers if needed without compressing the down from within. The shell is soft and silky to the touch and the polyester liner is an absolute dream, but once again, it occasionally loses the odd down plume mainly through the stitching. (Not through the shell side but on the polyester liner side.) Wind resistance is good but personally I'm not sure that this jacket would quite cut it below -7C up a mountain. At least not without a few additions. I find that after compressing the down, the loft returns back to normality a bit slow and awkwardly. I think a better quality of down would loft more rapidly, particularly with overfill to allow for lost down over time. At lower temperatures the stitch through construction becomes noticeable because there is no loft where the material is clinched. This amounts to a lot of cold zones over the jacket but I find that a fleece or two under the jacket makes this unnoticeable. Your perception of comfort will depend a lot on your personal matabolism, physical activity, sensitivity to the cold and your physical condition but I find that I am perfectly comfortable at -3C with a base layer and two thin fleeces underneath, even at a very low level of physical activity. I have also done tests at +1C but in a very damp and wet environment with moderate wind and had a similar experience with regards to comfort. This jacket would probably do better in a drier environment but I like the low weight and high thermal resistance of down so will try and combine it with other jackets such as the Apogee and the Balance waterproof jacket when I get round to it. I would probably think about a second Phantac jacket as a spare if Alpkit ever manage to fix the leaking down on the liner side and improve water resistance on the shell side of the jacket. One of the things I like about the jacket is that the arms are long enough so I can pull the sleeves over my hands if I need to. Despite the drawbacks it's a fairly good jacket but a few improvements as mentioned above would be just great.

Personal experience of the Phantac

Personal experience of the Phantac
I have been purchasing a lot of Alpkit products recently because I find that the quality of this brand is good in relation to the price. My latest purchases were the Phantac and Apogee jackets. The first purchase was the Phantac which has a good insulation to weight ratio. Up to now I have only had the opportunity to test it in temperatures between about -3C and +15C. On it's own at +15C I find this jacket to be comfortable with low levels of activity. One of my tests was at +7C. It is resistant to wind chill which is wonderful if you want to be comfortable in strong winds and seems snug and warm wearing nothing underneath at this temperature and I would give it between a 3 and 4 star rating. Why? Well, I can't give it a 5 star rating because this would imply that this jacket is as good as it can get, but it's not.
The thing I hate most about down is that I'm forever finding rougue down plumes where they are not meant to be. In this age of technological wonders they still can't make jackets and sleeping bags that don't bleed down. I have found three down plumes in as many weeks. Some tell me this is no problem but at this rate I will have lost 104 down plumes in two years and I know that this is damaging the insulation quality of this jacket. This makes me very nervous and I'm not happy about it. The plumes seem to come out through the stitching inside.
Apart from other issues there should be more insulation in the shoulder area because the weight of the jacket is suspended here and if you wear something over the top of this jacket this compresses the down in this area. I tend to feel a bit of chill here and the back of the shoulders over time but it's not a big problem. As long as you can keep this jacket perfectly dry it works alright but the shell fails in rain and heaven help you if you are up a mountain and faced with a combination of sleet and freezing rain which can often happen this time of year. However, the shell of this jacket is very breathable and will shrug off a few drops of rain. But it is not very good if you are caught out unexpectedly and it starts raining. I have done a few tests with rain and the jacket failed miserably. At first I thought the problem was the breathable material. In the past I have had a fair bit of experience with material that is breathable and waterproof until you rub or apply mechanical activity to it. At first, I thought this was the problem with the Phantac but I was wrong. The Apogee uses the same material but it's performance in rain is pretty good compared to the Phantac. As it turns out, the problem with the Phantac is all the stitching and seams built in it to make the down chambers. Water tends to go strait through this stitching, not straight away but after a minute or two. The result is compromised down loft which collapses either partially or totally. The Phantac jacket could have been a really great jacket if only they had built it with taped seams or some other means of making the stitching more waterproof. Yes there is stitching in the Apogee but not nearly as much and what is there seems to stand up to water much better.
If I had a wish list of improvements that could be done to the Phantac then top of the list would be stitching and material that was resistant to escaping down. I would also ask for waterproof seams, a differential cut for improvement of loft and to prevent the loft being compressed because of pressure from other clothes inside, perhapse with 100 percent 850+ fill power down instead of the 750. Other manufacturers also use metalized reflective material inside the jacket to reflect radiant heat. This jacket is fine if you are standing up in it. But if you need to use it in your sleeping bag, the toggle for adjusting the hood is going to dig into your head as it is situated at the back of the hood. But to be fair I have noticed that this problem can be fixed if you have a soft pillow. On the positive side I find that this jacket has a broad comfort range. That is the range of temperatures where you are neither too hot nor too cold.
As of yet I have only tested this jacket in moderate temperatures but will check it out for cooler conditions and write another review soon.

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