Light and packable, the Cirrus Flex is the ultimate year-round synthetic insulation. Its versatile enough to accompany you on any mountain adventure, either as an outer in the warmer months or as an active booster layer when the temperatures drop. With its hallmark fleece side panels that breathe on the climb and reduce bulk, its 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. Down-Like Flexibility | An insulated vest designed with better flexibility for moving around the mountain all year long. Primaloft Silver Rise Insulation | 100% recycled synthetic insulation mimics the lofty warmth of down while retaining its warmth in wetter climates. Pertex Quantum Shell & Stretchy Fleece Sides | Windproof material treated with a fluorocarbon-free DWR for water resistance, and stretchy fleece sides enhance mobility. Mountain Full of Features | Smooth-sliding YKK Vislon zipper; zippered hand and internal security pockets, one of which packs the vest inside itself for compact storage. Specs | [Best Use] Trekking, Climbing, Skiing; [Shell, Lining] 20D Recycled Pertex Quantum, PFC-Free DWR; [Sides] Thermic Fleece; [Insulation] Recycled Primaloft Silver Rise 100% (99g); [Pockets] 2 Zippered Hand, 1 Zippered Internal Security Chest; [Weight] 395g