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Atom LT Vest


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Atom LT Vest Women's Lightweight, insulated Coreloft™ vest, designed to preserve core warmth; ideal as a layering piece for cold weather activities. Atom Series: Synthetic insulated mid layers | LT: Lightweight.

Lightweight, insulated Coreloft™ vest, designed to preserve core warmth; ideal as a layering piece for cold weather activities. Atom Series: Synthetic insulated mid layers | LT: Lightweight.

Silver Lining
Vultee Blue
5 Detail Photo(s), 1 Video(s)
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XS, S, M, L, XL
195 g / 6.9 oz
Trim fit, Hip Length
Sizing Chart: 
Gender Equivalent Product:


This sleeveless core-heater hugs the body with efficient Coreloft™ insulation to preserve warmth while durable fleece side panels—made with Polartec® Power Stretch® with Hardface® Technology—increase active use breathability and mobility. A wind and moisture resistant outer shell extends stand-alone usability.

Learn More About This Product

Arc'teryx Coreloft™ Insulation

Coreloft Fibres Coreloft™ insulation

Developed by Arc'teryx, Coreloft™ is a synthetic insulation made of staple fibres in mixed sizes that are crimped to trap air and retain warmth. Available in different thicknesses for end-use performance and comfort.

Key Advantages

  • Lightweight and highly compressible
  • Durable and resilient
  • Retains its warmth in humid and wet conditions and dries quickly if wet

Arc'teryx Fit Guide - Trim Fit

These trim fitting garments share motion-friendly traits with our Athletic fit, but are patterned with lower volume for reduced bulk. Our trim fit is sized for a base layer and a trim synthetic or down filled mid-layer

To find out how to calculate your body measurements, view our Sizing Charts:

Men's Tops | Men's Bottoms
Women's Tops | Women's Bottoms


Insulated mid layers made with hydrophobic synthetic material that resists absorbing moisture. Outer fabric has a water-repellent finish.

LT | Light Weight

Built with highly durable top performance materials but designed with a streamlined minimalist set of features to provide very light weight.

Full Feature List

Technical Features
  • Moisture-wicking
  • Breathable
  • Insulated
  • Lightweight
  • Compressible and packable
  • Wind resistant
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Composite construction
  • Breathable, stretch side panels for enhanced comfort and mobility
  • Trim fit for base layer or light mid-layer use
Collar Configuration
  • Soft brushed-lined collar
  • Mid-height collar
Zippers & Fly Configuration
  • Full front zip with wind flap
Hem Configuration
  • Drop back hem
Pocket Configuration
  • Internal chest pocket
  • Two hand pockets


  • Polartec® Power Stretch® with Hardface® Technology—88% polyester, 12% elastane, 230 g/m². A four-way stretch fabric that allows for excellent athletic movement and good breathability to maintain comfort. Some products feature Hardface® Technology for a higher level of abrasion resistance.
  • Coreloft™ 60 (60 g/m²) insulation. Made with highly crimped multi-denier siliconized polyester yarn, this lightweight, breathable, and thermally efficient, 100% polyester staple fibre is very compressible and has excellent loft retention.
  • Tyono™ 20 denier shell with DWR treatment - 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


  • Outdoor Gear Lab Editor's Choice Award
  • Best in Test: Allmountain Magazine (Germany)
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