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Cerium LT Vest


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Cerium LT Vest Men's Streamlined, lightweight, vest filled with 850 white goose down. This backcountry specialist vest is intended as a mid layer or standalone piece in cool, dry conditions. Down Series: Down insulated garments | AR: All-Round.

Streamlined, lightweight, vest filled with 850 white goose down. This backcountry specialist vest is intended as a mid layer or standalone piece in cool, dry conditions. Down Series: Down insulated garments | AR: All-Round.

Tropos Blue
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S, M, L, XL, XXL
165 g / 5.8 oz
Trim fit, Hip Length
Sizing Chart: 
Gender Equivalent Product:



Strategic placement of synthetic and down insulation has Coreloft™ synthetic insulation, that retains warmth when wet, placed along the collar and shoulders — areas prone to contact with moisture. 850 fill European white goose down lines the core where warmth is most needed.


DWR finish repels moisture so don't be afraid of being caught in light precipitation.


Streamlined and lightweight, the Cerium LT vest is filled with 850 white goose down and is intended primarily as a mid layer in cool, dry conditions.


Specialized construction: light, elasticized hem; binding finishes and superior craftsmanship are the thoughtful attention to detail that allows the use of stronger fabrics that can stand up to everyday use. This is a piece you will want to live in.

As an alternative to down fill insulation, we also offer synthetic fill products, such as the Atom LT Vest.

Learn More About This Product

Arc'teryx Down Construction

Down Cluster Down Cluster showing filaments

Down done differently - Minimalist design for maximum performance, built to the highest levels of craftsmanship, with innovations for increased range of comfort and conditions. Efficient, lightweight and durable enough to wear every day.

Key Advantages

  • High warmth-to-weight ratio
  • Conforms closely to the body trapping heat closer to your core
  • Highly compressible

For more information on Arc'teryx Down technology and how to care for your Down garments, please visit our Down page.

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


Streamlined, lightweight goose down filled jackets made of a composite construction to provide warmth where it is needed most. High warmth-to-weight ratio.

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-resistant outer face fabric
  • Breathable
  • Insulated
  • Great warmth-to-weight ratio
  • Compressible and packable
  • Durable
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Down Composite Mapping strategically places Coreloft™ synthetic insulation in areas where moisture may buildup and down in areas for maximum warmth
Zippers & Fly Configuration
  • Full front zip with chin guard
  • Corded zipper-pulls reduce noise and are easy to grab
Pocket Configuration
  • Two hand pockets with zippers
Integrated Features
  • Includes stuff sack


  • Coreloft™ 100 (100 g/m² ) insulation. Made with highly crimped multi-denier siliconized polyester yarn, this lightweight, breathable, and thermally efficient, 100% polyester staple fiber is very compressible and has excellent loft retention.
  • Airetica™—100% nylon, 34 g/m². Tightly constructed, high tenacity, 20x10 denier ripstop nylon with a smooth hand.
  • 850 fill European white goose down


  • Machine wash in warm water (30°C) on gentle wash cycle.
  • Do not use fabric softener.
  • Front load washing machine recommended (use a mesh bag for top loading machines).
  • Rinse twice.
  • Tumble dry on low heat with tennis balls or 'sock balls'. Drying time may take up to three hours.
  • Do not iron.
  • Store unstuffed in a dry place.
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