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Atom LT Hoody Men's         

Light, versatile synthetically insulated hoody works as a  midlayer and standalone. Atom Series: Synthetic insulated midlayers. |  LT: Lightweight.  



Versatile synthetic insulated mid layers with a high degree of weather resistance.          


High performance, minimalist design that is durable for its weight.          


Versatile high performance designs for diverse activities and conditions.          

Synthetic Insulation

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

Atom LT Hoody         

Alpine proven as a midlayer and standalone, this  versatile hoody has warmed climbers and backcountry travelers for years.  Built to handle a range of conditions and output levels, the  latest-generation Atom LT’s Coreloft™ Compact insulation retains its  warmth even if wet and has loft retention to withstand years of packing  and unpacking. The water resistant Tyono™ 20 face fabric is breathable  and durable, stretch side panels improve fit and freedom, and the  insulated StormHood™ adds warmth. Redesign includes an update to the cuff construction for easier  on/off and layering, an updated material package for enhanced  durability, updated fit, and a dope dyed liner.    


XS, S, M, L, XL, XXL, XXXL   


375 g  / 13.2 oz   


Trim fit, Hip Length, Centre back length: 74 cm / 29.1 in   

Model Measurements:


  • Height: 6ft 1"/185.4cms
  • Waist: 29"/73.7cms
  • Inseam: 33"/83.8cms

  • Wearing Size: Medium
  • Wearing Colour: Elytron

Sizing Chart:

Men's Top Sizing Chart   


All Round                        



Manufacturing Facility: 

Youngone (CEPZ) Ltd., Bangladesh      


Full Product Features


Technical Features

  • Moisture-resistant outer face fabric
  • Breathable
  • Insulated
  • Lightweight
  • Compressible and packable
  • Versatile
  • Wind resistant


  • Performance stretch fleece side panels give ventilation
  • Light, soft Tyono™ 20 is air permeable
  • Resilient Coreloft™ Compact 60 insulation retains loft

Design & Fit

  • Trim fit for base layer or light mid-layer use


  • Articulated elbows
  • Gusseted underarms for mobility and comfort

Hood Configuration

  • Adjustable, insulated, low profile StormHood™ with structured mini hood brim

Zippers & Fly Configuration

  • No Slip Zip™ front zipper
  • Custom TPU zipper pulls

Cuff & Sleeves Configuration

  • Stretch-knit cuffs
  • Improved cuff construction increases durability, eases layering and removal

Hem Configuration

  • Laminated hem
  • Slight drop hem
  • Dual lower hem adjusters

Pocket Configuration

  • Two hand pockets with hidden zippers
  • Internal chest pocket with zip


  • Contains materials that meet the bluesign® criteria
  • Dope dyed lining fabric

Fabric Treatment

  • DWR (Durable Water Repellent) finish repels moisture


Arc'teryx Layering System


Materials & Care



  • Coreloft™ Compact (60 g/m² )  insulation. Highly crimped, multi-denier siliconized polyester yarn that  has undergone a special process which reduces the thickness of the  material by 50%, without reducing its insulation value by the same  amount. Lightweight, breathable, thermally efficient 100% polyester  fibre.
  • Tyono™ 20 denier shell with DWR treatment - 100% nylon
  • Stretch fleece - 94% polyester, 6% elastane
  • Dope Permeair™ 20 - 100% nylon


  • 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