"What Our Gearhead® Experts Are Saying: ""I reach for this jacket when I want reliable warmth without the fuss of down. It lofts fast, stays warm in damp conditions, and packs down small in my pack. I’ve used it as a midlayer in winter and as a standalone jacket on cool, windy days, and it’s consistently comfortable and versatile."" We layer into the Cirrus Jacket when the mountains feel cold, exposed, and unpredictable. Rab reworked this classic synthetic insulator with higher-loft PrimaLoft® Silver RISE insulation and a refreshed baffle design, giving us immediate warmth when we crest windy ridgelines or stop moving in bitter conditions. The recycled Pertex® Quantum shell blocks wind while staying soft and packable, helping the insulation maintain loft without adding unnecessary bulk. Synthetic insulation keeps performing even in damp weather, making this jacket a dependable choice for mixed conditions throughout the year. With thoughtful features like a fleece-lined chin guard, adjustable hem, and a packable design that stows into its own pocket, the Cirrus Jacket earns its place as a go-to layer for all-mountain adventures in every season."