; Winter treks can take it out of you if your kit isn't flexible. The Arc'teryx Fission SV Jacket pairs a premium GORE-TEX PRO shell with next-level, Coreloft synthetic insulation for breathable, insulating hardshell coverage designed to go the distance. ; Regular Fit: • e3D (Ergonomic 3-Dimensional) construction improves mobility via anatomical mapping. • Allows room for an additional baselayer. ; N80p-X GORE-TEX PRO fabric: • Dense plainweave reduces yarn exposure for extreme abrasion resistance. • Breathable three-layer membrane bonded to the shell and liner. • Windproof and waterproof design with fully taped seams. • DWR (durable water repellent) finish. • Abrasion-resistant, highly lightweight microgrid backing. ; Coreloft Continuous 90 insulation: • Continuous filament construction helps to eliminate cold spots and bunching caused by gaps in insulation bunching. • High degree of hydrophobic performance speeds the passage of moisture vapor from perspiration. • Synthetic insulation improves thermal retention while maintaining low bulk. • Pairs with a Permeair 20 nylon ripstop lining, constructed with an open weave for active breathability. • 2.7 oz/yd² / 90 g/m² fabric weight. ; DropHood design: • Attached hood hangs free from the separate collar. • Helmet-compatible construction with one-hand adjustable, multi-point drawcords. • Laminated brim prevents moisture accumulation. • Insulated with Coreloft Continuous 65 fill. ; Full-length front zip with water-resistant, Vislon Watertight zipper. ; Long sleeves in an articulated panel construction. ; Adjustable, hook-and-loop tab cuffs. ; Zip hand pockets. ; Inner mesh pocket. ; Inner zip pocket. ; Droptail hem with adjustable drawstring. ; Body: 100% nylon; Membrane: 100% EPTFE; Insulation: 90% polyester, 10% acrylic; Lining: 100% nylon. ; Machine wash and tumble dry. ; Imported. Measurements: ; Length: 28 in ; Product measurements were taken using size SM. Please note that measurements may vary by size.