Light and packable, the Cirrus Flex is the ultimate year-round synthetic insulation. It’s versatile enough to accompany you on any mountain adventure, either as an outer in the warmer months or as an insulating layer when the temperatures drop. With its hallmark fleece side panels that breathe on the climb and reduce bulk, it’s easy to layer and offers superb freedom of movement. Re-engineered with high-lofting PrimaLoft® Silver RISE insulation, it features larger baffles that allow the insulation to loft more and retain more heat. Delivering exceptional warmth for weight, the insulation recovers quickly when wet, making it the ideal choice for your hikes, climbs, and scrambles in damp weather.