Arc'teryx Cerium Hoody Jacket combines high loft insulation with a lightweight, packable profile. It excels as an alpine midlayer or a standalone insulating layer for cool, dry conditions. Key attributes: Black | Czarny | Nylon Arato | High warmth-to-weight ratio (850-fill down) | Synthetic Coreloft™ insulation in moisture-prone areas for wet-weather performance | FC0-DWR durable water-repellent finish | Lightweight, breathable and wind resistant | Adjustable, down‑insulated StormHood (helmet-compatible) | Two zipped hand pockets and internal zippered security pocket | Compressible and packs into included compression sack | Adjustable hood drawcord with single-pull adjuster | Baffle construction with Down Composite Mapping™ | Reverse coil center-front zipper with chin guard | Elastic cuffs and adjustable hem drawcord | TPU zipper pulls | Dimensions & fit: Garment centre back length (Size M): 72 cm / 29 in | Trim fit — low-volume cut ideal for layering | Composition & care: Outer: Nylon 15D Arato — 100% nylon | Lining: Nylon 20D Arato — 100% nylon | Filling: 850-fill European white goose down (min 90% down, 10% feathers) | Synthetic insulation: Coreloft™ 80 — 100% polyester (used in moisture-prone areas) | Machine wash gentle cold. Tumble dry low with clean tennis balls to restore loft. Do not bleach. Wash dark colours separately. Do not dry clean.