To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
Warm, incredibly lightweight, highly weather resistant and supremely packable, the Nuclei is ideal for alpine climbing, belaying and Scottish winter mountaineering. 
Warm, incredibly lightweight, highly weather resistant and supremely packable, the Nuclei is ideal for alpine climbing, belaying and Scottish winter mountaineering. 

Arcteryx Mens Nuclei FL Jacket Dynasty

Click & Collect for Free
 in Customer Rewards when you buy this item today

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!


With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on the Undetermined

Arcteryx Mens Nuclei FL Jacket Dynasty Information

Season : 2020W A

Brand : Arcteryx

Code : 25170-DYN-

What is the Nuclei FL?

Featuring a windproof, highly water resistant outer fabric and Arc'teryx's own Coreloft synthetic insulation, the Nuclei is warm, incredibly lightweight, tough and packable. It's the ideal piece for alpine climbing, belaying, Scottish winter mountaineering and as a warm jacket to stick over your other layers when stationary. 

What is it made of?

Insulation: Arc'teryx use their own Coreloft Continuous 65 synthetic insulation inside the Nuclei. Thanks to its synthetic construction, Coreloft is virtually unaffected by moisture, packs down to a fraction of its original size and provides high amounts of warmth when using it as a stop-start piece in the UK or as a super warm active piece in alpine conditions. 

Outer fabric: Surrounding this toasty insulation is a tough, windproof and highly weather resistant 10D nylon fabric. Although 10D may convince you that this is as tough as tissue paper, it's woven in a ripstop construction to increase the durability far beyond that of a non-ripstop fabric. Its windproof construction boosts the overall warmth of the jacket tenfold, making it the perfect choice for super cold, windy, harsh conditions. A durable water repellent coating is then added to the outer of this fabric to allow light rain and snow to bead off the surface. 

What are the features?

Starting at the top, a fully adjustable, helmet-compatible StormHood adds valuable warmth and protection on cold belay stops and alpine ascents. Two external hand pockets store essentials, while two internal dump pockets are perfect for a warm set of mitts or gloves. An adjustable hem seals in warmth around your waist and can be adjusted easily when wearing a harness. 

How does it fit?

The Nuclei features a trim, regular length (67cm, size medium) and is designed to be worn fairly close to maximise warmth. If you're familiar with the Atom by Arc'teryx, the Nuclei is a little slimmer.  

Where does it fit in the layering system?

The Nuclei is primarily designed to be worn as an outer layer, either when stationary to provide warmth and protection or while climbing/mountaineering in cold, harsh conditions. 

  • Windproof
  • Highly water resistant
  • Tough ripstop nylon outer fabric
  • Coreloft insulation
  • Two internal dump pockets
  • Two external hand pockets
  • Adjustable hem
  • Helmet-compatible hood
  • Trim fit
Technical Information

Weight: 325g (M)


- Arato 10r, 100% nylon

- Coreloft Continuous 65

Sizing Information

Arc'teryx Men's Jackets & Shirts Sizing Information

Measurements refer to body size, not garment dimensions.

  Chest Waist Hip Sleeve
X-Small 36" 29" 36" 32"
Small 38" 31" 38" 33"
Medium 40" 33" 40" 34"
Large 43" 36" 43" 35"
X-Large 46" 39" 46" 36"
XX-Large 50" 43" 50" 37"
  Chest Waist Hip Sleeve
X-Small 92cm 74cm 92cm 81cm
Small 97cm 79cm 97cm 84cm
Medium 102cm 84cm 102cm 86cm
Large 110cm 94cm 110cm 89cm
X-Large 118cm 99cm 118cm 91cm
XX-Large 128cm 110cm 128cm 94cm

Next to Skin Fit: Cut snug to the body through the entire garment to enhance moisture management and thermal efficiency.

Slim Fit: Cut slim to the body through chest, waist, hip and thigh for a low profile fit.

Regular Fit: Cut comfortably from the body through bust/chest, waist, hip and thigh for a classic fit.

Relaxed Fit: Cut loosely through the waist, hip, and thigh for a casual fit.


Measure around your chest/bust, holding the measuring tape under your armpit.


Measure around your waist at the narrowest part.


From a standing position, measure from your crotch to your ankle.


With your arms in a slightly bent position, measure from the centre of the back of your neck, along the length of your arm, to the wrist.


Measure around your hips at the widest part.

Professional Opinion
Product Reviews
Write a review
0 As rated by 0 Customers

Write a review for Arcteryx Mens Nuclei FL Jacket Dynasty

Your name
Your email address
How would you rate it?
Would You Recomend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about this product
Ask a question
Questions asked regarding Arcteryx Mens Nuclei FL Jacket Dynasty

Ask a question

Your name
Your email address
Your Phone Number
Your question
Submit Question  Close
Home Clothing Arcteryx Jackets

Be the first to know

Signup to receive the latest news and offers, straight to you inbox.