Name: Thorium 750 Fill Power Down Hooded Jacket
Brand: Arc'teryx
Price: 500.00 USD
Availability: InStock
Rating: 3.2 (5 reviews)

Details & care

Designed for versatile performance in cold environments, this durable hooded jacket features high-loft down combined with strategically placed synthetic insulation. The streamlined silhouette offers reliable warmth and comfort during a variety of outdoor activities.

28" length

Front zip closure

Drawcord-toggle hood

Elastic cuffs

Zip hand pockets; internal zip pocket

Lined, with 90% down, 10% feather fill

100% nylon

Machine wash, tumble dry

Imported

Item #11650814

Core Product ID 33333BGECE

Nov 1, 2026

A new bag

One wonders how the new sizing makes sense. Larges have become baggy, street wear oriented and catering to whom? The city dwellers? A once formidable jacket. The warmest and technically best has become also a victim of Arc’teryx please everyone syndrome. I wore large for 25 years. On this new iteration, a medium is baggy. The sleeves are humongous. The hood unnecessarily large. They dare to call it a belay jacket. Nothing further from that. It is a vulgar city jacket with an absurd fit. Call it something else but daring to desecrate the Thorium heritage is funny. Your core and soul were the mountains, these new revisions are pathetically destroying your legacy.

Reposted from arcteryx.com

arcteryx.com response

Hi there, thank you for taking the time to share your feedback and for being a long-time Thorium user. We're sorry to hear that the fit of the current Thorium Hoody did not meet your expectations. We understand how noticeable fit changes can be, especially when you've worn the same size for many years and have become accustomed to the way previous generations fit and performed. The current Thorium is designed with a regular fit to provide comfort, layering versatility, and freedom of movement, but we recognize that this may result in a different experience than earlier versions. We appreciate your detailed comments regarding the overall fit, sleeve length, and hood volume, as feedback like yours helps our Product teams better understand how updates are being received by long-time guests. Thank you again for taking the time to share your perspective.

Polo

Oct 16, 2026

Fits like a square

If you enjoy a square fit buy this jacket. Gone are the days where Arc'teryx differentiated itself with tailored fits shaped for athletic outdoor types. I've worn medium since 2010. This jacket was as wide as it was tall on me just like a square. I'm 6' 1" 160 lbs. The previous Thorium had a more typical tailored fit. My gripe with that jacket was the hood was small to the point it could make the jacket ride up on me. This new version in white just makes me look like the Stay Puft Marshmallow man. Aside from that fabric seems durable as usual. I passed on this model.

Reposted from arcteryx.com

arcteryx.com response

Hi Jose, thank you for taking the time to share your feedback. We're sorry to hear that the fit of the Thorium Hoody did not meet your expectations. We understand how noticeable fit changes can be, especially when you've had positive experiences with previous generations of a product. The current Thorium is designed with a regular fit to allow for comfort, layering versatility, and freedom of movement, which may result in a different silhouette than earlier versions. We're pleased to hear that the durability of the fabric met your expectations, and we appreciate your detailed comments regarding the fit and proportions of the jacket. Feedback like yours is valuable to our Product teams as they continue to evaluate fit and design across future collections. Thank you again for taking the time to share your experience.

Jose Tejas

Oct 12, 2026

Updated as Belay jacket sizing

So first thing’s first: this has been updated as a belay jacket but it’s not very explicitly stated. It really should be in the name. Essentially the medium now fits like the large did last year, but with shorter sleeves. On a positive note, The hood is much better than last year’s version. Thankfully, I looked up reviews and thought to order a size down. The only problem is that the arms are too short for me in a medium. I’m gonna send it back, but I already have a belay jacket so I guess this isn’t gonna work for me. blurple is a very nice color though. Overall pretty frustrating. If the sleeves were about 2 inches longer, the medium would fit me perfectly as a daily driver.

Reposted from arcteryx.com

arcteryx.com response

Hello there, thanks for sharing your experience. The latest Thorium Hoody was intentionally refined for climbers, with increased down fill, a boxier fit to improve layering, and larger baffles that visually set it apart from past versions. Those updates do change how the jacket fits compared to previous seasons, and sizing down is something many guests have found helpful, though sleeve length can vary depending on build. We’re glad to hear the hood improvements stood out, and we appreciate your feedback on sleeve length and naming clarity as we continue refining the line. The Thorium has definitely been a guest favorite, and we’re sorry this iteration didn’t align with what you needed in a daily driver.

MKDSE

Oct 10, 2026

DLP - Decent little puffer

It’s a jacket for a cool day. I’m 5’10” Bp 225 and I could still throw something under it. The hood helps with the stylish look… and wind. It has stash pockets on both sides for sneaking your favourite pint glass. It also comes with a little baggy so you can ball it up and use it as a pillow.

Reposted from arcteryx.com

Puff Daddy

Sept 23, 2026

Hard to tell as it was too big across the waist.

I’m 5’9” and ordered a Large. I’ve got an athletic build. It was too big across the midriff, but ok in the shoulders and arms. So I returned it. I’ve ordered the same jacket in medium. But without the hood. As they had no hooded ones left.

Reposted from arcteryx.com

Jack