Alright first off, I got this jacket about six months ago and picked it up dirt cheap. This jacket jams, I've climbed, hiked, backpacked, skied, and toured in this thing and it eats it up. Solid construction, Eco primaloft insulation is really warm for the weight, and it packs down dummy dumb small, and the wire in the hood gives you unhindered peripheral vision. I tied some cord to the zipper on the stuff pocket and have taken it on many many multi-pitch climbs, as a belay jacket. Works great. Under a soft shell or hard shell its perfect for skiing for climbing on the mountain. Great athletic cut, light weight and warm. This was my first EU product and i must admit when i bought it I was skeptical, but this thing did a lot in turning me into a believer.

First off, very good jacket. Warm, wind resistant, lightweight. Functionality is perfect for cool to cold activities, depending on exertion levels. A night hike to 12 or 14K, ending with the sunrise is a good place for this layer. Thin enough for under a shell. As a Belay jacket, order a size up or else you have a form fitting insulation piece and the hood won't fit a helmet. I wear a medium Patagonia Puff or DAS. The Prism would need to be a Large for me as a belay piece. I'm wearing it under things however and ordered a Medium, which fits very true at 5'11 170-175lbs.

My experience with primaloft eco is that it kind goes with your body temp. It doesn't seem to get too hot (like when you come in from outside), but will be very warm between 35 and 50F and warmer when moving/working.

Pockets are good, set hight for harness. I wish there were and inside pkt. The pockets are insulated too! (a layer of primaloft on both outside and inside next to body). Jacket packs small and neatly into self stash pocket. Ends up the size of a bible or so.

Lastly color and cuffs. The orange on the interior is bright, not dull like the photo. The blue is also richer than the photo. I like the look in the photo better. It is more vintage and low key. If you like Auburn football, you'll love these colors, although the blue is not Navy. The blue is better than the orange. The photo added by backcountry is a much better depiction of color here.

The cuffs should be adjustable IMO. The straight elastic is snug, but I don't always need it so close to the wrist.

All said, great jacket for weight, warmth and will be durable I'm sure.

It's always difficult determining the true appearance/color online and so I ordered both the Steel and the Morrocan Blue. Both very nice looking but am keeping the blue and returning the Steel because while I like gray, this jacket is dark enough that it could be mistaken for black, which I don't really want.

It's a good basic insulated, mid-warmth, yet very lightweight jacket. I'm 6'1" & 175 lbs and the Large fits well. Nice proportions and the over-all cut/fit are conducive to activity/movement. I purchased it to wear under my shell for cold weather skiing but find it to be highly versatile by itself. I like the uniquely adjustable hood. The two pockets are fine but was kind of hoping for additional pocket/storage options but that's all there is. I guess there's something to be said for simplicity.

I'm new to the technical gear, but am amazed that something so light can offer such comfort and relative warmth. It's not for frigid temps by itself, but is a solid jacket, looks well-made, and offers a cozy feel in chilly conditions, even when spitting rain. Pockets do offer warmth, but it only has the two front ones. Fit is well-sized; I am 5 10 and 170, and got a medium, which fits without much extra room (including the sleeves), so it can fit underneath a shell. I'm very impressed.

The Prism 2.0 is going to be in my pack for every cool or cold season hike this year. The jacket is well made and warm for its weight and bulk. The fit is trim and the hood is well sized. The sleeves are adequately but not over insulated and of a normal length. It has been a perfect top layer for moderate to high activity levels in the gusty wind and near-freezing temperatures of late fall on Adirondack summits. With a hard shell on top, it should be good for peak-bagging on a typical Adirondack winter day of 10 degrees with blowing snow.

Where haven't I been you mean! Up untill now I really had problems finding a light insulation piece that I could wear continuously in the fall/winter/spring without that whole stop/start regmerole. 40g Primaloft eco with a Pertex Micro outer is the perfect solution. I wear it climbing, hiking, working and I even wore it on a 1000 mile bike ride in the spring! Can't recommend it enough and in combination with the Flux as a belay jacket even better. Stuffs into its right hand pocket for a neat travel pillow. Sweet!

Never heard of the brand before, but pretty psyched I took a chance on it. Uses very nice materials, seems to be smartly constructed, and packs down very well. A great jacket for a cool spring or fall day or as an extra layer between laps in the backcountry. Great price for what you get!

I bought this for a one night summit of Mt Shasta and a 4 day backcountry trip in Yosemite. I was looking for an insulating layer to through over my softshell, which I did on Shasta, and it worked well. I wore it as a stand alone in Yosemite, and it got the job done there too. Kept me warm, slipped on and off easy, and packed down small.

The one caveat I would add is that both of these trips were a little warm. I don't think it dropped below 25 on Shasta and barely broke freezing in Yosemite. This jacket might be a little light for serious cold.