Waist elastic is completely dead

Feathers ultimately gather/bunch very badly, after which jacket provides no insulation

It was good for the first 5 years though

I’m a big Arcteryx fan. Mostly for the design and fit.
I have several of their hard shells which are awesome.
(Alpha FL and Beta LT) .
If I could, I’d give this jacket a 3.5 star rating.
The fabric on this piece (and the hooded version I also have) is only ok. Kind of course to the touch.
Not smooth like my MH Ghost Wisperer, or the Pertex Quantum fabric in some other down jackets I wear such as the llbean 850 Ultralight jacket. In fact, other than the fit (too baggy) the llbean jacket might be superior- equal quality down (but treated for moisture) and nicer feeling fabric and $100 cheaper. Not as light though. Count me as a skeptic with the “mapping” use of synthetics. If I wanted synthetic insulation, I’d buy a jacket with it. In my opinion it’s just a way to use less down and save manufacturing costs.
No complaint on the zipper-most all super lightweight pieces have these small zippers to save weight. Nearly impossible to work without taking off your gloves.
If you can buy it on sale, I’d recommend.
It’s certainly not worth $350 in my opinion. But, there is the cache of wearing the Arcteryx brand.

I just got one in Cobalt Moon. The color is deeper than that in the picture. Its a very friendly fit to my board shoulder compared with my TNF similar jacket.

Overall 5 stars!

This jacket is great, I didnt get the full chance to experience the warmth. The zipper is the cheapest zipper that I have ever come across. I assume its to make it as light and compact as possible, but I feel that in 6 months time I will be having issues with this. Great delivery, REALLY GREAT service from Backcountry, but the product feels a but cheap on some areas.

Backcountry lists this as Regular fit, Arc'teryx's website says the fit is "Trim". I bought a L but I'm returning it. I usually take a large, I'm 179lbs 5'10 and the fit is snug, it's fine with just a T-shirt under it but being it's a winter jacket I'd like the option of dressing warmer AND being able to zip up my jacket. Trading this for the Arc'teryx Thorium AR. Nice jacket though.

As always, fast delivery. The jacket fits correctly and is cut very nicely. Fitted, but practical too. Looks great on, is very comfortable, and is just warm enough. I’m 6’4” and weigh 230 and a XXL it’s great. Arm length is perfect, chest and shoulders are good. If you know Arcteryx this will be just what you expect. Great gear.

I bought this brand before and I loved so I bought this for my brother and he uses it a lot in Boston now

I ordered both this and the patagonia down sweater to compare side to side. Upon trying on the arcteryx cerium jacket,, I noticed right away that the zipper is extremely tiny and feels flimsy. The arcteryx down jacket is MUCH warmer than the patagonia one though at a very similar weight.

I'm a TTS XL. I'm 6'3" and 205 lbs, and this thing was made "slim" but it just feels short and is slim in all the wrong places. I'm a very athletically built person and this did not fit me the way I thought it would. The chest felt loose, the waist was short and tight, and the armholes were high with too tight of arms.

I went from a marmot all around down jacket to the Cerium. Very nice jacket. I usually wear a hoodie under it and it is perfect so far.

This has become my go-to lightweight down jacket. It is warm, comfortable and compresses down to about the size of a Nalgene water bottle. I use it for both backpacking and around town. Worn over a lightweight fleece, this jacket is warm with low activity down to the 30s F.

I love this it is excellent

Love them so much

This jacket has performed well for a variety of activities, from cold weather camping to a forget about just-in-case layer to bring along backcountry skiing. The material feels comfortable next to skin, and provides enough warmth to throw over a light shirt and feel comfortable during a winter commute. I can't say that I love the styling or colors compared to other Arc'teryx pieces, and I've noticed that the synthetic insulation around the shoulders and cuffs has lost a noticeable amount of loft. I would rather have the full jacket with down, but this is a minor compliant. Overall a great jacket.

I own tons of Arc'teryx gear and would rate every item purchased in the past at 5 stars. This jacket, however, is a different story. It's warm as he'll, and fits like a glove, but after 4 days on a repelling tower, it's looking pretty shabby. I found a hole in the left pocket on the third day, not sure how it happened, but the fabric seems very delicate. Also, I am constantly finding the insulation penetrating the fabric and needing to be worked back in.

The jacket is super light. It packs down as advertised, and it is extremely toasty, but the fabric used seems much more fragile than anything I've ever seen put out by Arc'teryx. Sad, because for the price, I would have expected it to hold up better.

Purchased as a gift for our son. Needed jacket for skiing as well as everyday northeastern weather climate. This fit the need as well for fit and excellent quality. Worth every penny thus far. Time will tell regarding down fill issues.

High quality down, light fabric with synthetic insulation in the right spots and a trim fitting hoodless fit was exactly what I've been looking for.
I'm 6'2" 180ish with an athletic build, the large fits perfect under most layers.
For cool days at the ski area this works as a stand alone but keeps me toasty with a shell over it.
Pros: Warmth for its size. Packability, gets down to about the size of a pint glass in its stuff sack. Trim fitting is great for laying over a mid layer. Light, at 9oz its great for once counters. The had pockets are great, sit above a harness or hip belt.
Cons: Zipper is hard to start with gloves. Collar is a little tight.

All in all this is an awesome lightweight puffy for anyone looking for a warm jacket. From splitboarding and working at a ski are to using while belaying in the dessert in winter. Price is high but so is the quality

I'm 5'9, weigh 150 lbs with a runner's build. I was totally looking forward to this jacket after wearing out my Patagonia Down Sweater for years but found the fit on this jacket a bit off. It's fitted which was a plus, but the arm holes are very high and it's not like I have guns for arms. I've gone with a small for my prior Arcteryx jackets which have all fit perfectly but this one was a miss, at least for me.

is it canceled