I was so looking forward to receiving this jacket to replace an older one that had long worn out. It had all the features I was looking for and I was very pleased with the quality when I received it, but unfortunately it runs very small and didn't fit. I checked the garment measurements online, I checked my measurements, I double checked the size range listed and all indicated the XL would be a good fit with a little room to spare. I got the jacket and it was much smaller (by several inches) than the indicated measurements online. I don't know if this is an error in the pattern design or if the specific jacket I got was mislabeled, but at this price I'm not willing to take a chance on another. So disappointed, because otherwise it's a great product.If between sizes or muscular shoulders size up.I bpughtva medium - 35.5 bust 26.5 waist 38 hip. The shoulders fit butvthat isnthe tightest spot. Plenty of room in the waist. Hip is not snug but fitted. I can layer a sweater under which is what I wanted. Overall great warmth - good for 20 degrees and no wind by itself. Would need a shell for wind. Obviously this is pretty cost prohibitive - there are warm jackets with a lower price tag but you cannot beat how lightweight it is.First, I should say that I own three other Arcteryx jackets, all purchased within the past two years, so I know how they should fit. All three are size L and they are different jacket designs. All three fit me perfectly. I ordered this jacket (Cerium LT) for a friend's 60th birthday, so it's a very special present. I ordered a size L because we wear the same size. I tried it on to make sure the zippers worked, etc. To my surprise I discovered that the jacket is WAY too small. The waist is actually 3" smaller than my identical jacket in a different color purchased last year. I am returning it of course. As to whether or not all size L jackets are now 3" smaller around the waist, I will find out tomorrow when I visit my local Arteryx store in person. I ordered this jacket on line because the color I want is not carried in my local store. Very disappointed. If they have changed their sizing in the waist, it's goodbye Arcteryx for me. An XL will be too big everywhere else.Super light, super warm. Size 10: perfect fit. Hood easy to get on and off. You can cinch the waist in if you need to but really it isn’t necessary in order to keep toasty. This is THE best puffer I’ve owned.Bought for my wife - she LOVES it. But, the design runs a bit small - she had to return a Med and get a Large, and she's definitely not 'large' (usually wears Med and Size8-10 women's clothes)Lovely red color and super warm with little weight. Only issue so far is that some feather are sticking out on the seams. That's disappointing because my Patagonia down sweater jackets don't do that!Beautiful jacket - my wife loves it! Color as expected and good overall quality except one small snag that is hardly noticeable (nothing to make us want to return it, but troublesome with regards to how it was stored or handled by vendor).I was skeptical to purchase an Arc'teryx jacket on Amazon for an inexpensive price because I was totally expecting to get a fake. However, when the package came I checked all the specs and it is definitely an Arc'teryx. It has the YKK zipper and the tags in the right place. Super warm jacket to wear around town in chilly Montana!Incredibly warm and cosy. Brilliant insulation, but unfortunately runs a bit small, even after having gone up a size. Despite not feeling tight, even with extra layers underneath. However, unfortunately after a few hours of wear you start to lose feathers. Feathers, feathers, everywhere. Coming out of the seems and it still doesn't feel tight or restrictive, but the more you move and don't move the more feathers you lose. Such a shame. I would have sent it back if I hadn't taken the tag off.I bought another version of this directly from Arc'teryx because this seller sold me a men's medium when I purchased a women's medium. So speaking to the jacket itself, it is a wonderfully warm and light jacket. It is great for travelling as there is a pocket attached to the inner pocket which you can stuff the entire jacket into.El aspecto general no transmite mucha impresión de calidad y, para colmo, una de las costuras estaba saltada unos diez centímetros.Funcionalmente no puedo evaluarlo aún pero en cuanto a terminación, más bien pobre.Wife loves this coat, light weight stylish and nice color (plumb). It is warm on those single Didgit winter days!Espectacular plumas. No pesa nada y abriga que es una pasada