Strategic placement of 850-fill goose down and synthetic Coreloft insulation makes the Arc'teryx Cerium LT Jacket a stand-alone or midlayer specialist in cold, dry conditions. . Down Composite Mapping: Down placed in areas for maximum warmth; Coreloft synthetic insulation placed in moisture-prone areas. 850-fill European white goose down insulation lines body and sleeves for heat-trapping core warmth. Coreloft synthetic insulation (80 g, 100 g) placed in areas prone to contact with moisture: Hemline, collar, sleeves/cuffs, and underarms. Coreloft insulates when wet and dries quickly. Lightweight, highly compressible, packable, water and wind resistant with great warmth-to-weight ratio. 20 x 10 denier high-tenacity nylon shell fabric provides wind and water resistance. DWR (durable water repellent) finish helps repel water from fabric surface. Full front zipper with chin guard. Low-profile, 3-part sleeve construction allows unrestricted movement. Two hand pockets with zippers. Elastic cuffs; elasticized rear hem seals out drafts. Corded zipper pulls reduce noise and are easy to grab. Includes stuff sack. Trim fit with motion-friendly traits; layers well under a shell; hip length.