Arc'teryx Fission SL Jacket

Got this one on a pro-deal (sorry folks lol). I saw the details listed for this some 2+ years ago. I called Arc'teryx back then about tracking it down, but even the rep wasn't aware of it being made lol. In other words it looks like this has been in development for over 2 years. So here are some of the tech specs taken from Arc'teryx's website:

• Hip length
• Drop back hem
• Laminated 2.7 oz ThermaTek™ non-quilted construction
• Insulated helmet compatible Storm Hood
• Pit zips
• Two insulated hand pockets
• Two internal mesh pockets
• Articulated elbows

If you're familiar with the way Arc'teryx fits, this is the same fit you've come to know and love. Constructed with the athlete in mind, in other words not so great for folks with large bellies. Very long arms for reaching /placing a screw and so on. VERY warm for its weight. Great coverage with the drop tail, and the close fit seals in the warmth, and increases mobility.

I was surprised at how warm it is for its weight. I own the Fission SV, and essentially got the SL for less extreme use, and every day around town (picked it up in black for that reason..fyi the black WILL absorb that sun..my back was getting hot!). So the testing:

Day one: 25 degrees w/9 degree wind chill and mostly sunny.
layered with Patagonia R1 & silkweight-t. Light activity. Duration: 2 hrs. (when I figure out how do edit, I'll come back and update this as I use it this season and beyond)

Warmth: 5 stars (esp for its super light weight!)
Breathability: With the minimal use so far 5 stars (we'll see how it goes when I use it under harsh /more active conditions..the pit-zips I'm sure will go a ways)

Protection: 5 stars, windproof as expected (it's a gore shell after all lol). I have no doubt it will perform as it should when it gets wet as well.
Fit: I'd give it 10 stars if I could! like a glove!

So there you have it, brief review of my initial use!