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Arcteryx Men's Nuclei FL Jacket

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$166.99 - $249.00
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Product Description Item No.   10281238

Award Winner - Klettern Magazine Recommended (Germany)

Award Winner - Desnivel Gear Award Silver Winners - Midlayer Insulation

The Arc'Teryx Men's Nuclei FL Jacket is a belay jacket for lightweight warmth at the crag. Arato™ 10, 100% nylon, fabric is durable and strong while remaining plenty light and packable, so you can put it on in the morning, take it off and stuff it away in the afternoon, and quickly pull it on again as the sun sets. Inside, Coreloft™ 80 and 60 insulation is placed throughout to boost your upper body with the warmth it needs to get through the belay or the climb. It's not too heavy so you can still move and climb with ease but it still insulates against the chill so you stay focused. Pockets won't get in the way, the hood fits over your helmet, and when not in use the included stuff sack is ready to pack it down small and be clipped to your harness for the next wave of cold.

Products on Sale are Discontinued Styles or Colors.

FEATURES of the Arcteryx Men's Nuclei FL Jacket

  • 80 g Coreloft synthetic insulation is warm and resilient
  • Low profile 60 g Coreloft insulation in-sleeves and side panels reduces bulk
  • DWR treated Aroto 10 nylon ripstop shell is durable, water repellant and lightweight
  • Insulated, helmet compatible hood can be adjusted for a precision fit with or without a helmet
  • No Slip Zip works like a series of speed bumps keeping the main zipper from self-opening
  • e3D Ergonomic 3-Dimensional patterning for enhanced comfort and mobility
  • Articulated patterning and gusseted underarms for unrestricted mobility
  • Adjustable hem drawcord seals out cold drafts
  • Micro-seam allowance (1.6 mm) reduces bulk and weight
  • Two insulated zippered hand pockets
  • Included mini stuff sack can be clipped to your harness
  • Trim fit garments are patterned with lower volume for reduced bulk for easy layering
  • Packs up small for easy travel storage
  • Compressible and packable
  • Full front zip with chin guard and wind flap
  • Two hand pockets with hidden zippers
  • Refers to advanced gusseting and articulation in our garment patterning that creates better range of motion in key areas
  • Ergonomic 3-Dimensional enhances your ability to move freely and can be found in many of our trim, athletic and expedition fit garments
  • Insulation: Lightweight and highly compressible

- + Product Specifications
Weight: 10.9 oz
Back Length: 29.75 in.
Product Technology: DWR
Disclaimer: We only ship this brand to US Addresses.
Jacket Fabric: 100 % Nylon
Hood Type: Helmet Compatible, Insulated
Insulation Details: 80 g Coreloft
Exterior Pockets: 2
Gender: Mens
Features: Helmet Compatible Hood, Insulated, Packable, Water-resistant
Jacket Length: Hip
Best Use: Ice and Mixed Climbing, Climbing, Mountaineering and Alpine
Fit Type: Slim Fit
Insulation: Synthetic
DWR tech

Durable Water Repellant
DWR (Durable Water Repellent) is a coating that is applied to fabrics which makes them water-resistant, or hydrophobic. A DWR finish doesn't interfere with breathability, which makes it perfect for adverse conditions in the backcountry.

Men's Jackets, Shirts and Tops
SIZE X-Small Small Medium Large X-Large XX-Large
Chest 36" 38" 40" 43" 46" 50"
Waist 29" 31" 33" 36" 39" 43"
Hip 36" 38" 40" 43" 46" 50"
Sleeve Length 32" 33" 34" 35" 36" 37"
Numeric Size 36 38 40 43 46 50

• Arc'teryx recommends you calculate your body measurements using the info in the Measurement Guide below before selecting a product size. The measurements provided in their size guides refer to your body measurements unless otherwise specified.

• Check the fit type in the product FEATURES and SPECIFICATIONS and refer to the Fit Guide below to ensure you are ordering a product for the correct end use.

Men's Pants
SIZE X-Small Small Medium Large X-Large XX-Large
Waist 29" 31" 33" 36" 39" 43"
Hip 36" 38" 40" 43" 46" 50"
Length (Short) Subtract 2"
Length (Regular) 30 1/2" 31 1/8" 32 3/8"
Length (Long / Tall) Add 3"

• Please note that the actual pant length may vary slightly from the info above, depending on the intended end use of the product.

Men's Numeric Pant Sizing
SIZE 28 30 32 34 36 38
Waist 28" 30" 32" 34" 36" 38"
Hip 35" 37" 39" 41" 43" 45"
Inseam 32" 33" 34" 35"

• Several models of Arc'teryx pants are sized numerically and available in different inseam lengths. You will see these sizes reflected in the options in the Select a Size drop down menu for particular products.

• For all other pants available in numerical waist sizes where the inseam length is not specified, the inseam lengths provided above apply.

SIZE Small / Medium Large / X-Large
Head Circumference 21.7 - 22.4" 22.8 - 23.6"
Men's Gloves
SIZE X-Small Small Medium Large X-Large
Hand Width 7.6 - 7.9" 7.9 - 8.2" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"
Unisex Gloves
SIZE X-Small Small Medium Large X-Large
Hand Width 7.3 - 7.6" 7.8 - 8.1" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"


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

Waist - Measure around the natural waist, which is often the narrowest part of your waist.

Hip - Measure around your hips at the widest part.

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

Inseam / Pant Length - From a standing position, measure from your crotch to your ankle.

Head Circumference - Measure the full circumference around the widest part of your head.

Hand Length - Measure from the tip of your middle finger to the base of the palm.

Hand Width - Measure the circumference of your hand around the knuckles, excluding the thumb.

• Please note that all the info provided above refers to body measurements, and NOT the dimensions of the garment.


Next to Skin Fit - These snugly-fitting garments are made with stretch fabrics to fit next to the skin to enhance moisture management and thermal efficiency. Garments in this fit category when constructed using Arc'teryx's heavier-weight AR and SV fabrics also perform very well as mid layer pieces, and users should consider selecting a larger size to accommodate a base layer underneath if the intention is to use this layering system as a mid layer option.

Trim Fit - Trim-fitted garments share the motion-friendly traits with Arc'teryx "Athletic" fit garments, but are patterned with lower volume for reduced bulk. These close-fitting pieces layer well under other garments.

Athletic Fit - This is the "Arc'teryx Standard" fit. These complete patterns utilize anatomical shaping and gussets to enhance motion by minimizing excess bulk. Easy layering under or over each item extends seasonal versatility and comfort.

Relaxed Fit - Relaxed fit garments rely on higher volume patterns and a reduced amount of articulation to offer roomy mobility.

Expedition Fit - Cut roomier than the Arc'teryx Athletic fit and suitable for winter/extreme conditions, Expedition (XPD) fit garments are cut larger to accommodate multiple layers without binding or restricting movement.

• You can find the fit type and additional fit info for Arc'teryx styles in the product description FEATURES and SPECIFICATIONS.

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