Arc'teryx Men's Squamish Hoody

I've been really impressed with this windshirt. It leaves the house every day. My hard shell has stayed in the closet for everything but resort skiing since buying the Squamish. It's really comfortably and the clean styling works for the mountains and my cubical, allowing me to justify the cost since this covers all my life's uses.
The fit isn't sport specific, but I've been happy with it for cycling, hiking, snowshoeing, climbing, golfing, and working in a cube. The first thing you notice out of the package is how light it is. It doesn't back down as small as my wife's Houdini, but it's still small enough to always have it on you and feels more robust than the Houdini. They've nailed their design of the hood. I wear this cycling to work and it fits perfectly over my bike helmet and protects my ears from the wind, but with a few adjustments to the elastic pull cords, it isn't too floppy without a helmet. It has the athletic art'teryx cut that works perfectly for me, I'm 150 lb, 5'9" and the Medium is a perfect cut that works with an insulation layer and not too baggy with just a T shirt. I've worn it with the Atom jacket for biking and commuting to work through a Denver winter and have been mostly impressed by the performance. I've been though several rain,sleet, and snow storms and it's yet to soak through on storms up to an hour long. The breathability isn't outstanding, but adequate and a trade off I'm ok with. I tend to adjust the zipper for proper temperature control.
I'm really happy with my purchase and would recommend this to anyone. For me, I'm happier spending the extra on this wind shirt and going with cheaper hardshell since I'll wear this way more and the Squamish is so much better than a standard wind shirt.

If you're looking at the Squamish, you may be considering the Houdini as well. my comments on the Squamish vs. Houdini:
-Houdini stuffs smaller and it lighter but is a pain to get into its' self stuff pocket. The Squamish is bigger, but the jacket isn't tightly crammed into the pocket so I use the stuffable pocket a lot.
-Houdini is significantly less expensive, but the Squamish feels more robust and has worked for every sport I do.
-The Houdini's hood isn't helmet compatible. The Squamish hood works for my biking and climbing helmets but not my giant ski helmet. It may work for some lower profile ski helmets.
-Squamish has a better adjusting hood and adjustable cuffs.
-Houdini seems better suited for a running/hiking specific jacket, Squamish works better for me at everything but running.
My wife loves her Houdini, I love my Squamish. Both are great jackets and fill a similar place for playing in the mountains. Also see Outdoor Gear Lab's reviews, they have a good one for both jackets.

I use a windshirt as a mid-layer for heat retention during the winter to cut grams. From spring to fall I wear it over a t-shirt or thin base-layer when needed. As on other Arcteryx jackets there are no pockets at the hips, only a small crossover pocket on the left side of the chest. It really isn't good for much. The hood is nice, very adjustable. The material is wind and water resistant. The articulated cut of the arms is a great feature. I also like the heron color. In short, the jacket will do as it says, but it's pricey, about $70.00 more than the windshell by Montbell. The Montbell doesn't have the awesome dead fossil bones on it, but works just as well.

I own a few other pieces of Arc'Teryx gear and got the Squamish for a needed windshirt. Have taken it out on regular trails and into the mountains on a couple of occasions, and it has done a great job of keeping the wind out and is fairly breathable (I did have a bit of condensation but that was after some pretty brisk walking on a long ascent). So far seems pretty durable even though the Squamish is very lightweight and packs down very small when not needed. Hood is awesome too and easily adjustable. It is expensive and there are other similar pieces out there but I went with the Squamish based upon my experience with Arc'Teryx and their construction and attention to detail.

I own a few other pieces of Arc'Teryx gear and got the Squamish for a needed windshirt. Have taken it out on regular trails and into the mountains on a couple of occasions, and it has done a great job of keeping the wind out and is fairly breathable (I did have a bit of condensation but that was after some pretty brisk walking on a long ascent). So far seems pretty durable, and very lightweight and packs down very small when not needed. Hood is awesome too and easily adjustable.