Arc'teryx Cerium LT Hooded Down Jacket - Men's

Don't break down when it's cold outside.

Cerium is the most abundant rare earth metal, and it decomposes slowly in cold water and rapidly in hot water. The Arc'teryx Men's Cerium LT Hooded Down Jacket is not quite as prevalent as its namesake, but it does slow your decomposition in cold weather. The combination of 850-fill European goose down and strategically placed Coreloft insulation keeps you warm whether you wear the Cerium alone or under a hardshell when you're confronted with a winter tempest most storm chasers avoid.

Big numbers are fun when it comes to betting odds and down insulation. A higher fill-power down, like the 850-fill used in the Cerium, refers to how much space a single ounce of down occupies. The more space taken up by the down means more air is trapped between the fibers. Trapped air creates a barrier between warm air from your body and cold air in the environment, so you stay warm when it's cold outside. Taking this logic one step further, if one ounce of a certain down takes up more space than a different type of down, it stands to reason you'll need less of the 'bigger' down to keep you warm, thus reducing the weight of your jacket. In essence, this jacket's high down fill makes it both light and warm.

Since down doesn't maintain its warmth when it gets wet, the folks at Arc'teryx placed synthetic insulation in the spots that are most likely to get a bit damp. Still, while Coreloft insulation does resist moisture better than down, and an ominous drizzle won't leave you a cold, soaking mess, it's best to pair this jacket with a waterproof shell if you know stormy weather is coming. This superlight hooded jacket comes with its own stuff sack so you can easily bring it along and so your pack stays organized. The same 850-fill down fills the low-profile StormHood so your melon stays warm. (Mom was right—if you keep your head covered, you'll stay warmer.) Two zippered hand pockets hold your keys and phone, trail map and candy, or your partner's ID and lip balm.

  • A lightweight insulator for climbing, skiing, and hiking
  • 850-fill European goose down insulates and is highly compressible
  • Coreloft synthetic insulation in areas prone to moisture
  • Lightweight Airetica shell with DWR treatment resists moisture
  • Low-profile StormHood insulted with 850-fill down
  • Jacket stuffs into included stuff sack for easy packing
  • Trim fit layers comfortably under a shell when clouds gather
  • Reviews
  • Q & A

Best light weight jacket I've ever owned

    Best light weight jacket I've ever owned

    Great warmth, bad durability

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

    I got the jacket, and fell in love with the warmth and lightness of it. However the quality left much to be desired, as down feathers would poke out of the fabric as it slowly lost down.

    Second, after getting caught in a rainstorm while wearing it, the entire jacket started falling apart, fabric just disintegrated and the jacket became unusable. Do not have this jacket on if it starts raining! Arcteryx was of no help in there warranty department so far. I was only offered a discount on a new purchase.

    In my opinion this should not happen if you get caught in the rain!!!.

    Sadly, I have lost a good amount of faith in Arcteryx quality with this piece.

    best all around puffy

      us e this jacket in all weather, perfect weight for all activities

      Go to belay jacket

      • Size Bought: Medium

      Few things I look forward to more than throwing my Cerium on at the top of a skin track on a cold dawn patrol morning. It's super packable and super warm, I don't think there's much more you can ask for from a puffy.

      Top Notch Quality

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

      I bought this from a local gear trade page on Facebook for $125. I feel like I basically stole it. This jacket is very well put together. It replaced my old TNF Summit Series 900 fill coat and its better in every way except for the inability to cinch up the bottom around the waist. (There is no drawcord) Definitely still a very versatile jacket and an indispensable addition to my layering system for backpacking. Medium was perfect for me at 5'8 w/muscular build.

      Great jacket, service grief

        I like this jacket, it replaced my 5 year old Down Sweater. Very light and extremely warm. The zipper kept switching sides on the unzip or would pull off the jacket entirely. I bought this in November '16. The zipper is now lost, so this jacket is comprimised. I have to ship this Cerium LT to WA so it can be transferred to Arc'teryx headquarters to be fixed, and it could take up to 20 days. I'll be going through January and into Feburary without this jacket. Not happy with Arc'teryx service.

        Great jacket!

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

        This jacket is light and warm. I bought this to replace my old Western Mountaineering Hooded Flash Jacket. They have almost the same amount of down but my old jacket is a little warmer because it is constructed to be more puffy. This jacket is definitely more stylish and form-fitting but the arm-pit section could potentially be a little tight for some. This plus a fleece jacket and a 260 weight icebreaker shirt is enough to keep me warm for the whole winter in New York area both in the city and out in the woods. However, you probably need a rain jacket or soft-shell if it rains. It can hold up in light rain though.

        Love this jacket

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

        I bought this for my husband and here what he has to say about it:

        I am 5'7" 165 and the medium fits perfect. It sits just below the waistline so if you want a longer fit and have longer arms, you may want to size up. This jacket is extremely warm and light. I hiked in 18 degree weather with just a long sleeve base layer and was still a little too warm. Quality is second to none.

        Double Down

        • Familiarity: I've used it several times
        • Fit: Runs small
        • Size Bought: first a Large now an XL

        I love this jacket. The warmth is just insane also has a huge range of motion. I am 5'8 and have a Pennsylvania wrestlers build and I wear Large in everything. Every Arc'teryx jacket, shirt, and layer I own is a size large. I bought this jacket in a large and I looked like a hotdog and only had a T-shirt underneath. In really cold weather I can wear a flannel- Mtn. Hardwear Ghost Whisperer down jacket under my Atom LT under my Alpha SV shell and be completely fine but this coat for me runs small.

        If you are narrow you should be fine but if you are stout order a size up and it will fit like your normal size coat.

        Also, if you are tall you might be wearing a belly shirt. Seems like the coat was intended for a shorter torso. But, I am not tall so hopefully it works for you.

        Just size up

        Perfect down jacket? yes

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

        I normally wear an XL jacket or shirt and this arcteryx jacket was no exception.

        Jacket has a great athletic style fit to it. Makes even us "soft shaped" individuals look athletic! Does not make you look like a marshmallow. The high loft down means the jacket is quite thin and still warm. Length and sleeves are perfect for me.

        I brought this on a 4 day backpack trip to isle royale and it was just what the doctor ordered. It packs down to about half the size of a Nalgene during the day (amazing). At night you can unpack it and be comfortable well below freezing. I wear it in winter with my arcteryx beta at hardshell when the weather really goes south.

        The quality is outstanding. The coat feels great. The zipper feels a little small to be durable, but they have never given me any trouble. If they do, I have a lifetime warranty. The coreloft around the chin, wrists, and pits is brilliant. Depending on the activity you may break a sweat in this; you don't want that sweat to destroy your insulating capabilities. For me I sweat and vent from the wrists and the coreloft holds up great there.

        I can not personally tell you if a $400 jacket is right for you. I got mine cheaper from steep and cheap. I was hesitant at first but have never looked back since I got my hands on the jacket.

        Finally thoughts:
        Do not bring this on backpacking trip hoping it will double as your pillow. 850 fill power down makes for a terrible pillow.

        which size i can choose for Arc'teryx Cerium LT Hooded Down Jacket - Men's , my weight :143.3lb and height: 67 in

        Hey Elina, As it has a more trim fit, i'd recommend going with a medium for it to be most comfortably fitting for you! If you have any other questions or anything I can do for you, feel free to reach me at or my direct line 801.204.4547! Cheers, Connor

        good jacket,but one broken

          i bought two, but one was broken.

          Hey Bnznjn, I just sent you an email, but if you still have it, I'd be happy to help get you swapped out! Cheers, Connor

          Perfect for backpacking

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

          This jacket is warm light and simple and that's all I want for an ultralight backpacking piece. The face fabric seems to cut the wind pretty well and the DWR and strategically placed synthetic on the shoulders and cuffs made me more comfortable wearing in light snow or a very light drizzle.

          Im 6 foot 170 lbs and the M fit nice and close. I was able to fit a base layer and a fleece underneath but much more would have been restricting. I wore it in some pretty decent snowy wind and did not notice any heat loss from the waist as other reviewers have mentioned.

          Arc'teryx – Men's Cerium LT Hoody

          Streamlined, lightweight down hoody filled with 850 white goose down. This backcountry specialist hoody is intended primarily as a mid layer in cool, dry conditions.

          This baby was almost money

            This baby was money as far as quality but was too short in the sleeves and body.... so almost money

            Great product, nearly perfect

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

            Very warm, very weather resistant for weight and great fit. Even with the great fit and hood, there is still a way for cold air to seep in. The waist!! There is no drawcord for the waist! This jacket would be perfect if there was. Cold air gets in from the bottom... This can minimized by filling out the layers beneath, to create a tighter fit (obviously not too tight).

            Everything i was expecting

            • Familiarity: I've put it through the wringer

            I'm not a big skier and when I made the purchase over the winter I was itching to add this super-packable piece of gear to my backpacking kit. Could. Not. Be. Happier. When you're tramping around above 9000 feet it gets pretty cold when the sun goes down, even in July. Luckily this little core keeper will vastly reduce the additional layers you typically feel like adding to your pack. First night dipped under 30 and I did need to couple it with my sleeping bag, but otherwise I was able to sleep soundly in a hammock. Add a light rain jacket on top, though. It is down, after all. Glorious, featherlite, fever-inducing down...

            Everything i was expecting

            I love this jacket so much I bought 2!

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

            I have the light blue and dark blue. Great warmth and style. and the hoodie doesn't drown me.

            From town to summit

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

            First off, the navy/maroon color is great if you care about that sort of thing. It looks as good with a pair of jeans as it does with a soft shell.

            Second, oh my god warm! I was stuck in a storm high on Aconcagua for 3 days with wind chills far blow zero. I threw my hard shell over this puffy and could not believe that I never got cold when outside my tent. When I was moving on the non-storm days I wore my hard shell and would throw this over the top on breaks to keep in the warmth. The pockets a perfect for warming up the hands and the included stuff sack keeps this thing to minimal size when packed away.

            Third, as you would expect from this brand, it held up well to life on the mountain. No snags and when professionally cleaned it looked as good as the day I bought it. I am 5'11", 190 lbs and the large fits great.

            Versatile ultralight warmth

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

            Got this jacket to be used as a packable layer for winter camping, hiking, and skiing in New England. I now use it all four seasons either under a hard shell or on its own. Be careful if you wear it as an outer layer because the shell is delicate.

            I went with xl so I could have layers underneath and not feel too restricted, on its own a large would fit better, but for my use the xl was a better choice.

            Amazing how small and light this jacket is. On its own with a base layer it was comfortable to around 30, but with a hard shell over and fleece underneath I was comfortable to around zero.

            Great to throw on during breaks, the summit, or at night , a bit warm for high output movement unless it's real cold.

            Have yet to get it too wet, but definitely a good move having synthetic fill on shoulders and cuffs. I understand Arcteryx going for ultralight with this jacket but I still wish they had included a draw string to keep the bottom tight, definitely loses heat out the bottom especially on windy days but I'm sure if I had gotten the large it would be less of a problem.