The warmest fully waterproof jacket in the Arc'teryx Essentials collection.
The Fission delivers a high level of warmth with waterproof, breathable GORE-TEX protection. Designed for severe weather versatility, the thermally efficient construction pairs Coreloft™ Continuous synthetic insulation with a highly air-permeable liner to allow vapour to quickly reach the GORE-TEX membrane. This improves breathability without sacrificing warmth. The hardwearing GORE-TEX outer shuts out rain, snow and wind, and the insulated DropHood™ and collar add protection and warmth.
Technical Features Waterproof Breathable Insulated
Construction Tiny GORE seam tape (13 mm) Micro-seam allowance (1.6 mm) reduces bulk and weight Hydrophobic Coreloft™ Continuous insulation paired with Permeair™ 20 creates a lightweight, exceptionally breathable, thermally efficient system
Design & Fit One-hand adjustable drawcords Relaxed fit with e3D fit for easy layering, svelte profile and functional articulation
Collar Configuration Stand up collar Integrated fitted collar panel for added warmth and comfort Laminated chin guard Insulated collar
Zippers & Fly Configuration WaterTight™ external zippers WaterTight™ Vislon front zip
Cuff & Sleeves Configuration Die-cut Velcro® cuff adjusters reduce bulk, and won't catch or tear off
Hem Configuration Drop back hem Full seat coverage Adjustable hem drawcord
Pocket Configuration Internal chest pocket with zip Internal mesh dump pocket Two chest pockets with zippers Two insulated hand pockets with zippers Note: Our WaterTight™ zippers are highly water resistant, but not waterproof. We do not recommend keeping items in your pockets that may be damaged by moisture