Airy light, toasty warm, this 850 fill European white goose down covers your core in exceptional warmth and comes in at only 170 packable grams. The Arc'teryx Cerium Women's Vest is the right piece for everything from casual autumn wear over a flannel or sweatshirt to a warming layer in your pack you can pop on when you’re taking a rest stop at the summit… and the essential extra layering piece that doesn’t feel cumbersome when the snow is perfect and crisp, and the air is frankly cold. Fitted for gliding under a shell with room without added bulk and built for staying warm when you’re putting out the energy in the cold Arc’teryx has used Coreloft™ synthetic used in areas prone to moisture for a consistent performance out in the field. Articulated patterning for movement, zip hand pockets and an internal security pocket, this is one of the most versatile layering pieces in your wardrobe, with four season practicality all wrapped up in a nice light package.