The Arcteryx Fission AR Jacket is a lightweight, insulated, waterproof, windproof & durable winter jacket that provides reliable protection across a variety of winter conditions & activities. The Fission AR has been made using Coreloft insulation & two types of GORE-TEX Pro fabric, one of which has exceptional abrasion-resistant properties & is used to reinforce the shoulders, elbows, hood & collar areas. Features Fabrics: N40p-X GORE-TEX Pro 3L/N80p-X GORE-TEX Pro 3L/ Coreloft 100 insulation GORE-TEX Pro fabric is waterproof, windproof, durable, quiet & supple Athletic fit Upper hip length Stow Hood fits over a helmet with easy low profile storage in collar Internal mesh dump pockets Insulated hand pockets Weight: 717g (size M) Glossary GORE-TEX Pro Provides the highest level of durable waterproof/breathable performance available. GORE Micro Grid Woven Backer delivers garments that are consistently the lightest & most compact in the industry. GORE-TEX Pro has a sparsely woven nylon backer that is twice as durable as traditional tricot liners & allows moisture vapour to pass quickly through to the GORE-TEX membrane. N80p-X GORE-TEX Pro 3 L Developed in conjunction with GORE, a project 5 years in the making results in an exceptionally durable plain weave nylon face with high resistance to abrasion. Dense construction minimizes the exposure of yarns to abrasive contact, reducing damage to filaments & maintaining surface integrity. A durable micro-grid woven backer reduces weight & is also highly abrasion resistant. N40p-X GORE-TEX Pro 3LA high tenacity nylon face fabric with a flat filament warp yarn & false twist textured fill yarn, backed with a micro-grid woven backer. This fabric is lightweight, durable, & has excellent water repellency. DWR finish. DWRA finish applied to a fabric that will bead-up water on its surface to stop it soaking into the fibres. This maintains breathability & shortens drying times. Coreloft 100100% Polyester A lightweight, breathable, compressible & thermally efficient insulation that has excellent loft retention, & comes in 4 weights: 60g/m 2, 80, 100, 140.