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  • Arc'teryx - Nuclei FL Jacket - Men's -

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Arc'teryx Nuclei FL Jacket - Men's


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  • Nucleus - Unavailable
  • Cinder - Unavailable
  • Dynasty - Unavailable
  • Paradigm - Unavailable

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Nuclei FL Jacket

The Nuclei FL Jacket is a magnificent midlayer for fast-and-light alpinism. It's an ultralight insulator that adds a special touch of warmth ideal for climbers and trekkers constantly moving athletically. The Coreloft insulation is warm even if it happens to get wet, and the Arato shell adds windproof, water-resistant protection suitable for light snow and rain. Arc'teryx fitted it slim for easy layering, and articulated patterning ensures freedom of movement on the mountain. Adjustments at the hem and hood make sure the midlayer stays under your harness and over your hood.
  • Technical insulator designed for fast-and-light alpine missions
  • Arato shell is windproof, water-resistant, and breathable
  • Coreloft insulation stays warm when wet
  • Trim fit includes articulated patterning for freedom of movement
  • Harness- and helmet-compatible adjustments at StormHood and hem
  • Item #ARCZ93W

Arato (10D nylon ripstop)
Coreloft (65g/m²)
trim, articulated patterning
2 zippered hand, 2 internal
Claimed Weight
Recommended Use
all-mountain skiing, all-mountain snowboarding, backcountry skiing, backcountry snowboarding, freeride/powder skiing, freeride/powder snowboarding, hiking, trad climbing
Manufacturer Warranty
limited lifetime

Tech Specs

What do you think about this product?


>Rating: 5

Impossibly light. No BS, it works.

I've put it through the wringer
True to size
Size Bought
5` 10"
185 lbs

I'm a climber and hiker, and this piece is basically perfect. It does exactly what it is supposed to - blocks wind and keeps you warm. When you pick it up, it seems impossibly light and too thin to trust as your puffy. But, incredibly, it just works. The hood really fits over a helmet. This is not a winter belay jacket. Do not expect this to keep you warm while top roping ice in the NE. But if, as the name implies, you're moving fast and light, this is a no-brainer, idiot-proof layer that weighs nothing and should always be with you. If my objective was Rainier in the summer, 100% this is in my pack. Quick word on price - I don't usually advocate spending this much. I paid $225 on sale and that's still a lot. But bottom line, at least in this case, you get what you pay for.

>Rating: 5

Awesome Jacket...Everything and More!!!

I've used it several times
True to size
Size Bought
6` 5"
195 lbs

I have been extremely satisfied with this jacket. First the fit is perfect, fits even better than my Atom LT. I will say that when I took it out of the packaging and tried it on for the first time the sleeves seemed very snug as I slide my arms into the sleeves, but the fabric relaxes and it is very comfortable. I actually like this because I don't have excess fabric or that bagginess in the sleeves. The drop hem in the back keeps the draft out when I bend over and the cut at the front hem allows me perfect access to my pockets. For reference I am 6'5" 195 lbs and wear a 42L in a trim sports coat. The Large fits perfect. This jacket is very warm but does a great job at regulating my temperature without over heating. Fabric offers great wind protection, I was in 25 mph winds and stayed warm without being impacted by the wind. I also really like the Cinder color which is a dark grey color, I can use this as my 1 bag travel jacket (11 oz) so if I am travelling on business but at the same time I want to get out into nature on the trip I can use this jacket for all occasions unlike other bright colors which I wouldn't be able to use for business casual purposes. I also own an Arcteryx Atom LT, but this jacket has now become my go to favorite jacket. If you are looking for that jacket that you can put on and leave on all day without a lot of bulk, this is it. Wearing this jacket is like waking up in the morning and not wanting to get out of that favorite sleeping quilt or bag.

Thanks so much for the awesome review, Robert! Glad to hear you are loving your Nuclei!


Does it still include a stuff sack?