The Arc'teryx Men's Thorium AR Jacket succeeds at giving you maximum warmth and versatility in a mid-layer while limiting weight. They have expertly mapped two different types of insulation across areas of need: Coreloft synthetic in moisture-prone zones (hem, collar, sleeves and underarms) and 750 fill down in the core and arms. With such mapping precision they should have called this the Rand McNally Jacket.... but Arc'teryx never listens to my jacket name suggestions. The DWR (Durable Water Repellent) finished exterior will shed some moisture so the Thorium AR can handle itself on its own, but really shines as an insulating layer under a shell.
FEATURES of the Arcteryx Men's Thorium AR Jacket
Down Composite Mapping strategically places both down and synthetic insulation inside jacket
Soft, durable face fabric withstands abrasion while DWR finish repels moisture
Collar height provides warmth layering easily
Two zippered hand pockets, stuff sack included in pocket
Low profile, elasticized cuff layers easily
Hem drawcord adjusts to seal out drafts
SPECIFICATIONS of the Arcteryx Men's Thorium AR Jacket
Weight: 12.7 oz / 360 g
Fit: Athletic, hip length
Colibri - 100% nylon
750 fill European goose down (100 g) (M)
Coreloft 80 and 140 insulation (80 g/m2 and 140 g/m2)
This product can only be shipped within the United States. Please don't hate us.
"Arcteryx's first down offering is a success!"
Was debating between the Thorium AR and Cerium LT for a bit. Finally decided to go with the Thorium for the more durable 40D Colibri face fabric and slightly less trim fit for layering, since I plan to use this as an outer layer when a waterproof shell isn't needed. If Arcteryx stuff fits you well this will fit right in with the rest of your collection in the same size. Nice athletic fit but provides good movement and some room for layering. The face fabric is very low sheen, which I like. The inside fabric is shiny and smooth and feels nice on the skin. The minimal puffiness keeps you from looking like the Michelin man. The jacket is so light doesn't even feel like you have a jacket on. It's been below 32F in NY the last few days and I've used it with just a t-shirt under and it kept me nice and toasty walking around the city. I was surprised that it does a good job of keeping the wind out too. Love this jacket!
Best down I own - have a Pat high loft but I always prefer the fit of Arc better - whether it's sweaters, jackets, etc. True warmth w/ no weight or bulk. Minor irritation -when zipped up, there's a big dimple in the center of the jacket where the inside lining materials meet, causing a 5" puckering of the zipper and shell visible from the outside. Picture a 5" belly button just below the sternum. Just gives the appearance of poor tailoring/sewing. Not a deal breaker but I pay a premium for Arc because I expect a premium attention to detail. I hope it's just flaw with my jacket and not how every Thorium turns out.
There's a reason I always return to Arcteryx for outdoor clothing - the quality of material and construction. I tried this down jacket for a 3-day backpacking trip to the Smokies and it was perfect. The athletic fit allows good movement, even with a backpack, and the provided stuff sack is convenient when you need to peel a layer. No cold/hot spots and the loft didn't shift around inside the fabric. This jacket does run a little tight; so putting fleece layers underneath makes for a really snug fit which may bother some folks. Exceptional quality with the workmanship (seams, zipper, cuffs, etc.) and the fit all around is true to size.Great Moosejaw customer service (as expected & received)