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Nuclei FL Jacket Men's

Color: Dynasty

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Windproof, light, and packable Coreloft™ insulated hoody for climbing and other alpine pursuits. | FL: Fast and Light.

Fast and Light


Minimalist, high performance and lightweight, for rapid travel in variable conditions.

Alpine and Rock Climbing


Climbing equipment designed for efficient movement and protection in alpine environments.

Synthetic Insulation


Man-made insulation with quick dry times, durability and retains warmth when damp.

Fast and light alpine travel’s static phases require you stay warm while protecting yourself from chilling winds. Inspired by persistent athlete demand, and redesigned to their exacting specifications, the next-generation Nuclei FL Jacket is lighter, more resilient, and delivers outstanding thermal performance for remarkably little weight. The Arato™ 10D ripstop is windproof and durable, Coreloft™ insulation provides effective warmth – even if wet – and the insulated StormHood™ adds protection.

Weight 325 g / 11.5 oz

Fit Trim fit, Hip Length, Centre back length: 75 cm / 29.5 in

Sizing Chart Men's Top Sizing Chart

Activity Rock Climbing / Alpine Climbing

Model 25170

Full Product Features

Technical Features

  • Windproof
  • Great warmth-to-weight ratio
  • Compressible and packable
  • Durable
  • Water resistant


  • Coreloft™ synthetic insulation provides warmth with minimal weight and bulk

Design & Fit

  • Trim fit for athletic performance


  • Articulated patterning for unrestricted mobility
  • Gusseted underarms for mobility and comfort

Hood Configuration

  • Adjustable hood drawcord with single pull adjuster
  • Soft hood brim
  • Helmet compatible StormHood™ provides full coverage without impacting visibility

Zippers & Fly Configuration

  • Full front zip with wind flap

Cuff & Sleeves Configuration

  • Elasticized cuffs

Hem Configuration

  • Slight drop hem
  • Adjustable harness compatible hem

Pocket Configuration

  • Two hand pockets with zippers
  • Two internal dump pockets

Integrated Features

  • Utility loop for easy, secure storage



  • Arato™ 10r - 100% nylon
  • Coreloft™ Continuous 65 (65g/m²) insulation


  • Machine wash in cold water on a gentle cycle
  • Do not bleach
  • Tumble dry on low heat on a delicate setting
  • Do not iron
  • Do not wring
  • Do not dry clean