Who are these people who complain about the lack of windproofing? Don't you get it? This is supposed to be a layer UNDER a shell. It's the shell that should be providing windproofing. If they had made this jacket more windproof, then it would take away from it's breathability. Then the moisture retention would create it's own problems in freezing temperatures, and then I for one would not have bought it. This jacket is probably not fire proof either, but so what?

The only decision you have to make with this jacket is whether or not you're going to move a lot while wearing it. If you do decide to briskly walk over a mile in it, you should not wear even a thick flannel shirt. You should wear a light t-shirt.

However, I had to wear this during the Inauguration and it ably performed and kept my core warm even in the windchill of 10 degrees that we experienced. I wore this with an Arcteryx hardshell as well and core body temps never dropped.

You can wear this on still, cold nights but if the wind picks up, you'll find your body warmth robbed quickly.

This is a very warm bit of fleece insulation. Don't be fooled into thinking this is a frigid weather jacket, though. As it is highly "breathable", it is the reverse of windproof. Its general use is for layering under a windproof shell when its very cold, subtracting layers when it warms some.

For wearing around the house or the office this fleece is WAY too warm! I totally roast in it. But when the temps hit 0 to -20 you're really happy to have it. You'll probably never find a warmer fleece.

It's sorta annoying that the fleece has so little windproof-ness. You can be burning up in this fleece and walk outside only freeze in like 20 seconds. I guess i'm saying this fleece is a mid-layer only!

As far as the fit it's perfect. I have a medium Gamma SV so i ordered a medium Delta SV and the fit was exactly as expected.

In terms of quality, it's a really well built item. My only compliant, albeit very minor, was/is the draw strings in the pockets were way way too long so when you tightened them they would be really long and hanging out of your pockets or you have tons of bunched up cord. This makes it difficult to get things out of your pockets.

bottom line: SUPER warm mid-layer fleece for subzero temps only.

This is a very nice fleece. Fits well, lightweight, packable, and warm. However, for the price, they should've had some windproofing. I ended up returning this and getting a Patagonia R3 fleece, which has the same qualities, but blocks some wind.

I wouldn't call this a 'jacket' so much as I would call it a layer. I bought the layer with a specific use in mind, cold weather over a wool baselayer and under a windproof/waterproof shell...in this use this thing ROCKS! Keeps me very warm. For stand alone 'jacket' use, the Delta SV isn't really suited for much...in any wind it will not keep the heat in. I would really like the see the material on the outside of the neck used for the entire jacket for some wind protection, then I would wear this everyday. Although I love Arc'Teryx gear I don't believe the Delta SV is worth $200... BTW, I am 5'10' & 175lbs Large fits me perfect, keep that in mind for sizing!

I like the jacket, its really warm if your going to be in super cold conditions. I will not use this as a mid-layer for touring its just to heavy. I will use it for resort skiing in sub-zero conditions.
The fit is not what I have come to expect from Arc. This season I ordered the Delta SV and the Sniper both size L. The Sniper fits me so well and the Delta SV just doesn't fit as well. It feels like the arms are to long and its a little to tight around the torso.

Pros: Good snug, proper fit all around. Very warm.

Cons: Personally, I would have preferred one internal chest pocket and pit zips, instead of it's three external pockets.

It's the first piece of polartec clothing that I've ever had, was lucky enough to get it for christmas ... in boston weather I go out in winter with a t-shirt on underneath and am real comfortable, strong wind'll of course get thru, but it's relatively windproof. Just incredible warmth, feels so amazing on your skin, zipper-guard near your chin is a really nice attribute, big pockets. I'm a big fleece fan in general, but this one beats'em all by far.

The Arc'teryx Delta SV jacket is what you need for cold weather insulation under an impervious shell. Thick and furry, it is both comfortable and well tailored. The materials and workmanship are impeccable. Just what we've all come to expect from Arc'teryx.

This Delta SV jacket is going to keep you warm. There is no doubt that you can easily overheat with a fleece like this when layering for snow sport activities. The fabric and construction is nothing but superb Arcteryx technology employed to meet the highest standards in outdoor wear. The fit is unmatched, gusseted underarms allow this jacket to move with you not against you. The plush fabric makes for a conversation starter with any person of the opposite sex who knows snow sports and quality outdoor wear.

Enjoy

I ordered this because I needed a new insulation layer for my jacket for the winter. Overall I’m impressed with the fabric which keeps me very warm. It is extremely light compared to my North Face Denali. This jacket is not suggested to wear alone for windy days. Did I mention the fur on this jacket feels awesome on your skin?

Great fleece, really warm and light. Not too windproof, but still fine with just a t-shirt in 30F.

Don't get me wrong, this jacket is really nice, but I had to give it a 4 out of 5 ranking because of the value. $$$ is a lot to spend for an insulation layer. This is definitely not windproof as mentioned before. I wear it inside the house sometimes on a cold day to get that nice toasty warm feeling. It is a great jacket to combine with a good windproof shell.

Purchased as a closeout special here, I got a heck of a deal. As with most of my purchases at your site, I purchase the best product I can afford and care much more about function than style.

You are not going to find a warmer fleece layer. I use this much more than any other fleece I own during the cold MN ski sessions. However, it my be too much for warmer climates. As with other reviews, this jacket should have included pit zips.

This jacke is great. it's light and warm. I will definitly get another color soon.