The Arc'teryx Cerium Vest delivers game-changing warmth without the weight penalty that typically comes with premium insulation. Built for backcountry minimalists who count every gram, this ultralight down vest packs an impressive punch with 850 fill European white goose down strategically mapped alongside moisture-resistant Coreloft synthetic insulation in high-sweat zones. At just 7.1 oz, it compresses down to nearly nothing in your pack yet transforms into essential core warmth when temperatures drop during rest breaks, at camp, or as a crucial midlayer in your cold-weather system. The trim fit slides seamlessly under your shell or over base layers without the bulk that compromises mobility, while the adjustable hem drawcord locks out drafts when you need to seal in every bit of heat. Whether you're pushing through alpine approaches, settling into camp after a long day, or simply need reliable everyday insulation that won't weigh down your pack, the Cerium Vest proves that you don't have to choose between ultralight performance and uncompromising warmth.
Features
Down Composite Mapping™ strategically places synthetic insulation in moisture-prone areas while maximizing down warmth
Compressible design with included stuff sack for minimal pack space
Trim fitted silhouette optimized for layering under shells or over base layers
Adjustable hem draw cord seals out drafts and maintains core warmth
Three-pocket configuration with internal zippered security pocket for valuables
Articulated patterning allows unrestricted mobility during active pursuits
Reverse coil center-front zipper with TPU pulls for quiet, durable operation
Fair Trade Certified manufacturing ensures ethical production standards
Specification
Value
Weight
200g (7.1 oz)
Fit
Fitted
Fill Weight
2.17 oz
Fill Power
850
Materials
Outer: 15D recycled Arato™ nylon | Liner: 20D plant-based Arato™ nylon | Insulation: 850 fill European white goose down and Coreloft™ synthetic (80% recycled polyester)
